Square Ceiling Diffusers

44

description

Square Ceiling Diffusers Of Shahrokhi MFG Co

Transcript of Square Ceiling Diffusers

Page 1: Square Ceiling Diffusers
Page 2: Square Ceiling Diffusers
Page 3: Square Ceiling Diffusers

FIXED SQUARE CEILING

DIFFUSERS & GRILLES

APPLICATION

Shahrokhi fixed square ceiling diffusers &

grilles are designed to suit H.V.A.C

applications for ceiling mounting.These diffusers are used for supply, return

and exhaust air which provide a stable

pattern of horizontal air diffusion flowing

through a number of concentrically arranged

vanes (figure 1). These vanes are able to

provide 1,2,3 or 4 way air flow patterns.

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SH.SDI.F1

SH.SDI.F2

SH.SDI.F3

SH.SDI.F4

Page 4: Square Ceiling Diffusers

FRAME

Seven types of frame are available up on

request (figure 3).Select the type of frame is relative to

installation of diffusers location.This ability exists in (D,E,F,G) types which

internal concentrically arranged vanes come

out of frame for installation , adjust damper

and cleaning (Figure 4).Either is possible to adjust damper with

creation of a hole in internal vanes(Figure 5).

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D,E,F,G

(FIGURE 2)

SH.SDI .F1

TYPE (A)

SH.SDI .F2

TYPE (A) TYPE (D )

TYPE (C)TYPE (C) TYPE (F )

TYPE (E )TYPE (B) TYPE (B)

SQ

UA

RE

SH.SDI .F4

TYPE (A)

RE

CT

AN

GU

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R

TYPE (B)

SH.SDI .F3

TYPE (A)

TYPE (B)

TYPE (C)

DESCRIPTION

Shahrokhi fixed square ceiling diffusers

install easily over the square duct or round

duct with an adaptor (figure 18).In these diffusers high air diffusion flowing

under ceiling results in rapid temperature

and velocity equalization of the mixed air

mass.

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Page 5: Square Ceiling Diffusers

33

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m.

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Page 6: Square Ceiling Diffusers

MATERIAL & FINISH

High quality 1.25mm. thickness extruded

aluminium profile in matt aluminium

anodized finish for frames and vanes.White polyester liquid or powder coating

finish is also available or any other specified

color with raul code upon requirement.

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SH : Shahrokhi manufacture

SDI : Square ceiling diffuser

T : type : F1 : One way fixed type

F2 : Two way fixed type

F3 : Three way fixed type

F4 : Four way fixed type

WxHxk : Width (inch) x Height (inch) x Vanes way (Figure 2)

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SH.SDI.T-W x H x k

ORDERING CODE

Shahrokhi fixed square ceiling diffusers &

grilles are specified with following ordering

code.

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Page 7: Square Ceiling Diffusers

SH.SDI.F (SUPPLY)

ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)

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NECK.AREA

SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

(in )Xin

(sq.ft)in.w.g.

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

<18

50

100

200 200

400

500

700

200

179

256

222

229

0.010

0.007

0.010

0.019

0.014

0.015

<18

19

21

13 13

25 25

50 50

100 100

125 125

175 175

19

38

75

150

188

263

13

25

50

100

125

175

25

50

100

200

250

350

50

100

200

400

500

700

4 4

6 6

10 10

14 14

16 16

19 19

5

9

12

18

21

24

7

11

14

19

23

28

13

15

18

22

28

34

4

6

10

14

16

20

7 7

11 11

14 14

18 18

21 21

25 25

12

13

16

21

27

28

11

15

19

24

29

34

17

21

28

31

34

42

7

11

14

18

21

25

75

150

300 300

525

700

950

300

268

337

311

310

0.026

0.021

0.026

0.033

0.028

0.028

<18

18

20

25

25

26

19 19

38 38

75 75

131 131

175 175

238 238

28

56

113

197

263

356

19

38

75

131

175

238

38

75

150

263

350

475

75

150

300

525

700

950

5 5

7 7

12 12

17 17

21 21

23 23

7

10

14

19

22

27

9

12

16

21

25

29

14

17

21

24

30

36

5

7

12

17

20

23

9 9

12 12

15 15

21 21

24 24

27 27

13

14

19

25

28

33

13

16

22

28

31

37

19

23

29

36

36

45

9

12

16

20

24

27

100

200

400 400

650

900

1200

400

357

417

400

392

0.046

0.037

0.460

0.050

0.046

0.044

19

20

26

29

30

30

25 25

50 50

100 100

163 163

225 225

300 300

38

75

150

244

338

450

25

50

100

163

225

300

50

100

200

352

450

600

100

200

400

650

900

1200

6 6

9 9

14 14

18 18

22 22

26 26

9

11

16

20

25

29

11

14

18

22

27

32

15

18

24

26

32

38

6

9

14

18

22

26

11 11

13 13

16 16

22 22

27 27

31 31

14

16

22

27

31

37

15

18

24

29

33

40

21

26

33

39

40

48

11

13

18

22

27

32

125

250

500 500

775

1100

1450

500

446

497

489

474

0.072

0.058

0.072

0.071

0.069

0.065

23

25

31

33

35

35

31 31

63 63

125 125

194 194

275 275

363 363

47

94

188

291

413

544

31

63

125

194

275

363

63

125

250

388

550

725

125

250

500

775

1100

1450

8 8

11 11

15 15

19 19

23 23

27 27

11

13

17

21

27

30

12

15

19

23

29

34

16

19

26

27

33

39

8

11

15

19

23

27

12 12

15 15

18 18

24 24

29 29

33 33

15

17

23

28

32

39

17

20

28

31

34

42

22

28

36

42

43

49

12

15

20

24

29

33

150

300

600 600

900

1300

1700

600

536

577

578

556

0.104

0.084

0.104

0.097

0.097

0.090

27

29

35

36

39

39

38 38

75 75

150 150

225 225

325 325

425 425

56

113

225

338

488

638

38

75

150

225

325

425

75

150

300

450

650

850

150

300

600

900

1300

1700

9 9

12 12

16 16

20 20

25 25

29 29

12

14

19

22

28

32

14

16

21

23

30

35

17

21

28

28

35

40

9

12

16

20

25

28

13 13

16 16

20 20

26 26

31 31

36 36

16

19

25

30

33

40

19

23

29

32

36

44

24

30

38

47

47

51

13

16

22

27

30

35

175

350

700 700

1025

1500

1950

700

625

657

667

637

0.142

0.114

0.142

0.126

0.129

0.118

32

33

40

42

44

44

44 44

88 88

175 175

256 256

375 375

488 488

66

131

263

384

563

731

44

88

175

256

375

488

88

175

350

513

750

975

175

350

700

1025

1500

1950

10 10

13 13

17 17

21 21

26 26

30 30

13

15

20

23

29

34

14

17

22

24

31

36

18

22

29

29

36

41

10

13

17

21

26

30

14 14

17 17

22 22

27 27

32 32

37 37

17

21

27

31

35

42

20

25

31

34

38

45

26

31

41

48

50

54

14

17

23

28

31

38

200

400

800 800

1150

1700

2200

800

714

737

756

719

0.186

0.148

0.186

0.158

0.167

0.150

36

38

44

47

49

49

50 50

100 100

200 200

288 288

425 425

550 550

75

150

300

431

638

825

50

100

200

288

425

550

100

200

400

575

850

1100

200

400

800

1150

1700

2200

11 11

14 14

18 18

22 22

27 27

31 31

14

16

21

23

30

35

15

18

24

25

32

37

19

23

30

31

37

43

11

14

18

22

27

31

15 15

18 18

23 23

28 28

33 33

38 38

19

22

29

32

36

44

21

26

33

36

39

47

28

32

44

49

53

56

15

18

24

29

32

39

225

450

900 900

1275

1900

2450

900

804

817

844

801

0.230

0.188

0.230

0.193

0.205

0.186

40

40

47

49

52

54

56 56

113 113

225 225

319 319

475 475

613 613

84

169

338

478

713

919

56

113

225

319

475

613

113

225

450

638

950

1225

225

450

900

1275

1900

2450

12 12

15 15

19 19

23 23

29 29

33 33

15

17

22

24

31

36

16

19

26

26

33

38

20

25

31

32

39

44

12

15

19

23

29

33

16 16

19 19

24 24

29 29

34 34

40 40

21

24

31

33

37

45

22

27

35

39

41

48

30

34

46

51

55

58

16

19

25

30

33

40

<18

<18

P

6"x6"

[0.25]

9"x9"

[0.56]

12"x12"

[1.00]

15"x15"

[1.56]

18"x18"

[2.25]

21"x21"

[3.06]

Page 8: Square Ceiling Diffusers

NECK.AREA

SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

( )Xin in

(sq.ft)

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

900

100

75

150

200

200

225

263

150

238

267

227

0.014

0.020

0.002

0.016

0.021

0.014

21

<18

<18

<18

19

<18

225 225

17 33

9 28

15 60

17 83

14 86

338

17

9

15

17

14

225

42

33

60

92

93

450

50

38

75

100

100

900

100

75

150

200

200

22 22

4 6

4 7

4 10

4 12

4 13

25

4

4

4

4

4

29

9

9

12

13

14

34

14

14

16

17

18

22

7

8

10

12

14

28 28

7 11

6 11

7 14

7 16

7 18

31

7

6

7

7

7

35

14

12

17

18

18

41

18

19

21

22

23

28

12

13

15

17

18

1250

125

125

200

250

275

313

329

250

317

333

313

0.029

0.032

0.018

0.029

0.033

0.029

26

19

<18

20

23

22

313 313

21 42

16 47

20 80

21 104

20 118

469

21

16

20

21

20

313

53

55

80

115

128

625

63

63

100

125

138

1250

125

125

200

250

275

26 26

5 8

4 8

5 12

5 14

5 14

30

5

4

5

5

5

34

10

10

14

15

15

39

15

15

17

18

19

26

8

9

13

14

15

30 30

8 12

7 13

8 17

8 18

8 19

36

8

7

8

8

8

39

15

14

19

20

20

46

19

20

22

24

24

30

13

14

17

19

20

1600

150

175

250

300

350

400

395

350

397

400

398

0.046

0.045

0.036

0.045

0.046

0.046

31

20

21

25

26

28

400 400

25 50

22 66

25 100

25 125

25 150

600

25

22

25

25

25

400

63

77

100

138

163

800

75

88

125

150

175

1600

150

175

250

300

350

29 29

5 9

5 9

5 14

5 15

5 16

32

5

5

5

5

5

37

11

12

15

16

16

41

16

16

18

19

20

29

9

11

14

15

16

35 35

9 14

8 15

9 18

9 20

9 21

40

9

8

9

9

9

44

16

17

20

21

22

50

21

22

24

26

27

35

14

16

18

20

21

1950

175

225

300

350

425

488

461

450

476

467

483

0.069

0.062

0.059

0.066

0.063

0.068

36

23

25

30

30

33

488 488

29 58

28 84

30 120

29 146

30 182

731

29

28

30

29

30

488

74

99

120

161

198

975

88

113

150

175

213

1950

175

225

300

350

425

31 31

6 10

5 12

6 15

6 16

6 17

34

6

5

6

6

6

38

12

14

16

16

18

44

17

17

19

20

21

31

10

13

15

16

17

37 37

10 14

10 16

11 20

10 20

11 22

42

11

10

11

10

11

47

17

19

21

22

22

53

22

23

25

26

29

37

15

17

20

21

22

2300

200

275

350

400

500

575

526

550

556

533

568

0.096

0.080

0.088

0.090

0.083

0.094

42

26

30

33

33

36

575 575

33 67

34 103

35 140

33 167

36 214

863

33

34

35

33

36

575

84

121

140

184

233

1150

100

138

175

200

250

2300

200

275

350

400

500

32 32

6 11

6 13

7 15

6 16

7 18

36

7

6

7

6

7

40

13

15

17

17

19

47

17

18

20

20

22

32

11

14

16

16

18

40 40

11 15

11 17

12 21

11 21

12 23

43

12

11

12

11

12

49

18

20

22

22

23

57

23

25

26

28

30

39

16

19

21

22

24

2650

225

325

400

450

575

663

592

650

635

600

653

0.128

0.101

0.123

0.117

0.104

0.124

46

28

35

37

35

39

663 663

38 75

41 122

40 160

38 188

41 246

994

38

41

40

38

41

663

95

143

160

207

268

1325

113

163

200

225

288

2650

225

325

400

450

575

33 33

7 12

7 14

8 16

7 17

7 18

38

7

7

8

7

7

43

14

16

17

18

19

49

18

19

21

21

22

33

12

15

16

17

18

42 42

12 16

12 18

13 21

12 22

12 23

47

12

12

13

12

12

52

19

21

22

23

25

60

24

26

28

29

32

42

17

20

21

23

24

3000

250

375

450

500

650

750

658

750

714

667

739

0.164

0.126

0.164

0.148

0.129

0.159

52

32

40

40

39

43

750 750

42 83

47 141

45 180

42 208

46 279

1125

42

47

45

42

46

750

105

165

180

230

303

1500

125

188

225

250

325

3000

250

375

450

500

650

36 36

7 12

8 15

8 16

8 17

8 19

40

8

8

8

8

8

45

15

16

18

18

20

51

18

20

21

21

23

35

13

16

17

17

19

45 45

13 16

13 20

13 22

12 22

13 24

51

13

13

13

12

13

56

20

22

23

23

26

62

25

28

30

31

34

45

18

21

22

23

25

3350

275

425

500

550

725

838

724

850

794

733

824

0.203

0.153

0.208

0.183

0.157

0.197

56

35

45

44

43

48

838 838

46 92

53 159

50 200

46 229

52 311

1256

46

53

50

46

52

838

116

187

200

253

338

1675

138

213

250

275

363

3350

275

425

500

550

725

38 38

8 13

9 16

9 17

8 18

9 19

42

9

9

9

8

9

47

16

17

18

19

20

53

19

21

22

22

24

38

14

17

18

18

19

48 48

14 17

14 21

14 23

13 23

14 26

55

14

14

14

13

14

60

21

23

24

25

27

65

26

29

31

32

35

48

19

22

23

24

27

ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)

SH.SDI.F (SUPPLY)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI g

in.w.g.

P

24"x24"

[4.00]

6"x9"

[0.38]

6"x12"

[0.50]

6"x15"

[0.63]

6"x18"

[0.75]

6"x21"

[0.88]

Page 9: Square Ceiling Diffusers

NECK.AREA

SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

(in )Xin

(sq.ft)

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

250

200

250 266

250

325

350

250

267

221

248

233

0.018

0.021

0.021

0.013

0.018

0.015

<18

18

16 109

38 62

37 88

31 94

35 128

33 142

16

37

37

31

35

33

118

82

107

109

145

159

125

100

125

125

163

175

250

200

250

250

325

350

4 14

6 10

6 12

6 13

6 14

6 15

4

6

6

6

6

6

15

13

14

15

16

17

19

17

18

19

19

20

15

12

13

14

15

16

7 19

12 15

12 17

12 18

12 19

12 20

7

12

17

12

12

12

20

18

19

20

21

22

24

22

23

25

26

27

20

17

18

19

20

21

325

250

325 346

350

425

475

325

333

310

324

317

0.031

0.033

0.035

0.028

0.031

0.029

20

19

22

19

22

24

18

24

20 142

47 78

49 114

44 131

45 167

44 193

20

47

49

44

45

44

153

102

139

153

190

215

163

125

163

175

213

238

325

250

325

350

425

475

5 15

7 11

8 14

7 14

7 15

7 16

5

7

9

7

7

7

16

14

16

16

17

18

20

18

19

20

20

22

16

13

15

15

16

17

8 21

13 17

13 19

13 19

13 20

13 21

8

13

19

13

13

13

23

19

21

21

22

23

26

24

25

26

28

28

22

18

20

20

21

22

400

300

400 426

450

525

600

400

400

398

401

400

0.046

0.046

0.053

0.046

0.046

0.046

29

18

24

25

27

28

28

30

25 175

57 93

60 140

56 169

56 206

56 244

25

56

60

56

56

56

188

122

171

197

235

272

200

150

200

225

263

300

400

300

400

450

525

600

5 17

9 13

10 15

9 16

9 17

9 18

5

9

10

9

9

9

18

15

17

17

18

20

22

19

20

21

21

24

18

14

16

17

18

19

9 23

14 18

14 20

14 21

14 22

14 23

9

14

20

14

14

14

25

20

22

23

24

25

28

26

27

29

30

31

24

19

21

22

23

24

475

350

475 505

550

625

725

475

467

487

477

483

0.066

0.063

0.074

0.069

0.066

0.068

33

27

32

33

31

34

30 208

66 109

71 166

68 207

67 246

68 295

30

65

71

68

67

68

223

143

203

241

280

329

238

175

238

275

313

363

475

350

475

550

625

725

6 19

11 14

11 16

11 17

13 18

11 19

6

11

11

11

11

11

19

16

18

18

19

21

24

20

21

22

22

25

20

15

17

18

19

20

10 24

15 19

15 21

16 22

15 23

16 24

10

15

21

16

15

16

25

21

23

25

25

26

29

27

29

32

33

33

25

20

22

23

25

25

550

400

550 585

650

725

850

550

533

575

553

567

0.088

0.083

0.099

0.096

0.089

0.093

37

31

35

35

36

39

34 241

76 124

82 193

81 244

77 285

79 346

34

75

82

81

77

79

259

163

235

285

325

385

275

200

275

325

363

425

550

400

550

650

725

850

6 19

11 15

12 17

12 18

12 19

12 20

6

11

12

12

12

12

21

17

19

19

20

22

25

20

22

23

23

27

20

16

18

19

19

21

11 25

16 20

16 22

17 23

16 24

17 25

11

16

22

17

19

17

26

22

24

26

26

27

30

28

32

34

36

35

26

21

23

25

26

26

625

450

625 665

750

825

975

625

600

664

630

650

0.114

0.104

0.129

0.128

0.115

0.123

40

34

37

41

32

43

39 273

85 140

93 219

93 282

88 324

91 397

39

84

93

93

88

91

294

184

267

328

369

442

313

225

313

375

413

488

625

450

625

750

825

975

7 20

12 15

13 18

13 18

12 19

13 20

7

12

13

13

12

13

22

18

19

20

20

23

26

21

22

24

24

28

21

17

19

19

20

21

12 26

17 20

17 23

18 24

17 25

18 26

12

17

23

18

17

18

28

23

25

27

27

28

32

29

33

36

37

37

27

22

24

26

27

27

700

500

700 745

850

925

1100

700

667

752

706

733

0.142

0.129

0.162

0.165

0.145

0.157

43

37

41

46

41

47

44 306

94 156

105 245

106 319

99 364

103 447

44

93

105

106

99

103

329

204

299

372

414

499

350

250

350

425

463

550

700

500

700

850

925

1100

8 21

13 16

13 18

13 19

13 20

14 21

8

13

13

13

13

14

23

19

20

21

21

23

27

22

23

25

25

29

22

18

19

20

20

22

13 27

18 21

18 23

19 25

18 26

19 27

13

18

23

19

18

19

29

24

26

28

29

29

34

30

35

38

39

38

28

23

25

27

28

28

775

550

775 824

950

1025

1225

775

733

841

782

817

0.175

0.157

0.197

0.204

0.178

0.193

46

40

44

48

45

51

48 339

104 171

116 272

118 357

109 403

114 498

48

103

116

118

109

114

364

224

331

416

459

555

388

275

388

475

513

613

775

550

775

950

1025

1225

9 22

14 16

14 19

14 19

14 20

15 21

9

14

14

14

14

15

24

19

20

21

21

24

29

23

24

25

25

30

23

18

20

20

21

22

14 29

18 22

19 24

19 26

19 27

20 28

14

18

24

19

19

20

30

25

27

29

30

30

37

32

36

39

40

40

30

24

26

27

29

29

ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)

SH.SDI.F (SUPPLY)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIh

in.w.g.

P

6"x24"

[1.00]

9"x12"

[0.75]

9"x15"

[0.94]

9"x18"

[1.13]

9"x21"

[1.31]

9"x24"

[1.50]

Page 10: Square Ceiling Diffusers

NECK.AREA

SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

( )Xin in

(sq.ft)

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

300

350

400

550

450

525

240

233

229

275

239

240

0.016

0.015

0.015

0.022

0.016

0.016

<18

<18

20

18

34 116

33 142

32 168

69 206

94 131

94 169

34

33

32

69

94

94

133

159

184

241

178

216

150

175

200

275

225

263

300

350

400

550

450

525

6 14

6 15

6 17

6 18

14 17

14 17

6

6

6

6

14

14

16

17

17

18

20

19

19

20

21

21

23

23

15

16

17

18

19

18

12 19

12 20

12 22

12 23

18 21

18 22

12

12

12

12

18

18

21

22

23

24

26

24

24

26

28

31

34

32

20

21

22

23

24

23

400

475

550

700

600

700

320

317

314

350

319

320

0.030

0.029

0.029

0.036

0.030

0.030

23

24

24

29

24

24

24

19

45 155

44 193

44 231

88 263

125 175

125 225

45

44

44

88

125

125

178

215

253

306

238

288

200

238

275

350

300

350

400

475

550

700

600

700

8 15

7 17

7 17

7 18

17 18

16 18

8

7

7

7

17

16

17

17

18

19

21

20

20

21

22

22

24

25

16

17

18

19

19

19

13 20

13 22

13 23

13 24

19 23

19 23

13

13

13

13

19

19

22

23

24

25

27

25

26

29

30

33

36

35

21

22

23

24

25

24

500

600

700

850

750

875

400

400

400

425

399

400

0.046

0.046

0.046

0.053

0.046

0.046

28

29

30

33

29

29

56 194

56 244

56 294

106 319

156 219

156 281

56

56

56

106

156

156

222

272

322

372

297

360

250

300

350

425

375

438

500

600

700

850

750

875

9 17

9 18

9 18

9 19

18 19

18 19

9

9

9

9

18

18

18

18

19

20

22

21

21

22

23

24

26

27

17

18

19

20

20

20

14 22

14 23

14 24

14 25

22 25

22 25

14

14

14

14

22

22

23

24

26

27

30

28

30

33

33

34

40

39

23

24

24

25

27

26

600

725

850

1000

900

1050

480

483

486

500

479

479

0.067

0.068

0.068

0.072

0.067

0.067

32

32

34

37

33

34

67 233

68 295

68 357

125 375

187 263

188 337

67

68

68

125

187

187

266

329

391

438

356

432

300

363

425

500

450

525

600

725

850

1000

900

1050

10 18

11 19

10 19

10 20

19 21

19 21

10

11

10

10

19

19

19

20

20

22

23

23

22

23

24

27

28

29

18

19

20

21

22

22

15 23

16 24

15 26

15 27

24 27

25 28

15

16

15

15

24

25

24

26

28

30

33

32

32

35

35

39

43

43

25

26

26

27

30

29

700

850

1000

1150

1050

1225

560

567

571

575

559

559

0.091

0.093

0.095

0.096

0.091

0.091

35

36

38

39

36

37

78 272

79 346

80 420

144 431

218 307

219 393

78

79

80

144

218

218

311

385

460

503

416

504

350

425

500

575

525

613

700

850

1000

1150

1050

1225

11 18

12 20

11 20

11 21

20 22

20 22

11

12

11

11

20

20

20

21

21

23

24

24

23

24

25

28

29

31

18

20

21

22

23

23

17 24

17 26

16 28

16 29

26 29

26 30

17

17

16

16

26

26

25

28

29

31

35

33

35

37

39

41

46

46

26

27

28

29

32

31

800

975

1150

1300

1200

1400

640

650

657

650

638

639

0.119

0.123

0.126

0.123

0.118

0.119

38

40

41

43

40

41

90 310

91 397

92 483

163 488

250 350

250 450

90

91

92

163

250

250

355

442

529

569

475

576

400

488

575

650

600

700

800

975

1150

1300

1200

1400

12 19

13 20

12 21

12 22

20 22

21 23

12

13

12

12

20

21

20

21

22

24

24

25

24

25

26

29

30

33

19

21

22

23

23

24

18 25

18 27

17 30

17 30

27 31

27 31

18

18

17

17

27

27

26

29

30

33

37

35

37

39

41

43

48

48

27

28

30

31

34

32

900

1100

1300

1450

1350

1575

720

733

743

725

718

719

0.151

0.157

0.161

0.153

0.150

0.150

42

44

46

46

44

45

101 349

103 447

104 546

181 544

281 394

282 506

101

103

104

181

281

281

400

499

598

634

535

648

450

550

650

725

675

788

900

1100

1300

1450

1350

1575

13 19

13 21

13 22

13 23

21 23

21 24

13

13

13

13

21

21

21

22

23

25

25

26

25

26

27

30

31

35

20

21

23

24

24

25

19 26

18 29

18 31

18 31

28 32

28 33

19

18

18

18

28

28

28

31

31

36

39

39

39

40

43

45

49

52

28

30

32

32

36

34

1000

1225

1450

1600

1500

1750

800

817

829

800

798

799

0.186

0.193

0.199

0.186

0.185

0.186

45

48

50

50

47

48

112 388

114 498

116 609

200 600

312 438

313 562

112

114

116

200

312

312

444

555

667

700

594

720

500

613

725

800

750

875

1000

1225

1450

1600

1500

1750

14 20

14 21

14 22

14 24

21 24

22 25

14

14

14

14

21

22

21

22

24

26

26

28

25

27

28

32

32

37

21

22

24

25

24

26

19 27

19 30

19 32

19 33

29 34

29 35

19

19

19

19

29

29

30

33

33

39

40

41

40

42

44

47

51

56

29

31

34

34

37

37

ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)

SH.SDI.F (SUPPLY)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Z

in.w.g.

P

12"x15"

[1.25]

12"x18"

[1.50]

12"x21"

[1.75]

12"x24"

[2.00]

15"x18"

[1.88]

15"x21"

[2.19]

Page 11: Square Ceiling Diffusers

NECK.AREA

SIZE SH.SDI.F4 SH.SDI.F3 SH.SDI.F2 SH.SDI.F1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

(in )Xin

(sq.ft)

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

600

600

700 233

875

240

228

250

0.016

0.014

0.015

0.018 21

94 206

129 171

131 219

191 246

94

129

131

191

253

236

285

342

300

300

350

438

600

600

700

875

14 17

8 11

8 11

12 17

14

8

8

12

19

13

12

19

21

16

15

22

18

12

11

18

18 23

15 18

15 19

16 21

18

15

15

16

25

20

21

23

33

25

25

26

24

19

20

22

800

825

950 317

1150

320

314

329

0.030

0.029

0.029

0.032

25

18

26

19

26

125 275

177 236

178 297

251 324

125

177

178

251

338

325

386

449

400

413

475

575

800

825

950

1150

16 19

9 13

9 14

14 19

16

9

9

14

20

15

15

21

25

18

18

25

19

14

14

20

19 24

16 20

16 21

17 23

19

16

16

17

26

22

23

26

36

28

27

30

25

21

22

25

1000

1050

1200 400

1425

400

399

407

0.046

0.046

0.046

0.048

30

21

25

30

31

30

156 344

225 300

225 375

311 401

156

225

225

311

422

413

488

557

500

525

600

713

1000

1050

1200

1425

18 20

10 15

10 16

15 21

18

10

10

15

21

17

17

23

27

20

20

27

20

16

16

22

22 26

17 22

17 23

19 25

22

17

17

19

28

24

25

29

40

31

29

34

27

23

24

27

1200

1275

1450 483

1700

480

485

486

0.067

0.068

0.068

0.068

35

35

36

34

187 413

273 364

272 453

372 478

187

273

272

372

506

502

590

664

600

638

725

850

1200

1275

1450

1700

19 21

12 17

12 18

16 24

19

12

12

16

22

18

18

26

29

22

22

30

21

18

18

25

24 28

18 24

18 24

20 29

24

18

18

20

32

27

27

32

44

33

32

38

29

25

26

31

1400

1500

1700 567

1975

560

570

564

0.091

0.094

0.093

0.093

39

40

40

38

218 482

321 429

319 531

432 556

218

321

319

432

591

590

691

772

700

750

850

988

1400

1500

1700

1975

20 22

14 19

13 19

17 26

20

14

13

17

24

20

21

28

31

24

25

32

23

20

20

27

26 30

19 26

19 26

21 31

26

19

19

21

34

31

33

34

47

36

35

41

31

27

28

33

1600

1725

1950 650

2250

640

656

643

0.119

0.125

0.123

0.120

43

44

44

42

250 550

370 493

366 609

492 633

250

370

366

492

675

679

793

879

800

863

975

1125

1600

1725

1950

2250

20 24

15 20

15 21

18 28

30

15

15

18

25

23

23

30

34

26

28

34

25

21

21

29

27 32

21 28

21 28

23 33

27

21

21

23

36

35

36

36

51

39

41

44

33

29

30

37

1800

1950

2200 733

2525

720

741

721

0.151

0.160

0.157

0.151

46

47

47

47

281 619

418 557

413 688

552 711

281

418

413

552

760

767

895

987

900

975

1100

1263

1800

1950

2200

2525

21 25

16 22

17 23

19 30

21

16

17

19

26

25

26

32

37

28

31

36

26

23

24

31

28 34

22 30

23 31

24 35

28

22

23

24

38

38

70

39

55

42

45

47

35

32

32

39

2000

2175

2450 817

2800

800

827

800

0.186

0.198

0.193

0.186

50

51

52

51

312 688

466 621

459 766

612 788

312

466

459

612

844

856

996

1094

1000

1088

1225

1400

2000

2175

2450

2800

22 26

17 24

18 26

20 31

22

17

18

20

28

27

29

34

39

31

34

38

27

25

27

33

29 36

23 33

25 34

25 37

29

23

25

25

41

40

42

42

59

46

49

51

38

35

35

40

ENGINEERING PERFORMANCE DATA >�9�� ��A����������������� ��������;�"��Q��Y��)

NOTES:

WIDTH (inch)

HEIGHT (inch)

SIZE :

P :

NECK AREA :

Throw :

NC :

Is the nominal neck

size in inches.Supply pressure drop

in inches water gage.Is in square

feet.In feet corres-

ponding to100 & 50 f.p.m.

terminal velocity.Room NC for supply

based on 8db room effect.

SH.SDI.F (SUPPLY)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIi

OUTLET AREA (AK=sq.ft)

w

H 6 9 12 15 18 21 24

6

9

12

15

18

21

24

0.096 0.144

0.200

0.170

0.260

0.350

0.200

0.320

0.430

0.540

0.240 0.270 0.310

0.370 0.430 0.480

0.500 0.570 0.640

0.610 0.710 0.800

0.770 0.860 0.970

1.040 1.130

1.340

RECOMMENDED CFM

8

10

12

14

16

18

250

500

850

1400

1800

2700

CEILING

HEIGHT(ft)

MAX CFM

PER SIDE

A A

B

B

in.w.g.

P

15"x24"

[2.5]

18"x21"

[2.63]

18"x24"

[3.00]

21"x24"

[3.50]

Page 12: Square Ceiling Diffusers

NECK.AREA

SIZE

(in )Xin

(sq.ft)

NECK.AREA

SIZE

(in )Xin

(sq.ft)

NECK.AREA

SIZE

(in )Xin

(sq.ft)

NECK.AREA

SIZE

(in )Xin

(sq.ft)

NECK.AREA

SIZE

(in )Xin

(sq.ft)

NECK

VEL.

f.p.m.

NECK

VEL.

f.p.m.

NECK

VEL.

f.p.m.

NECK

VEL.

f.p.m.

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

FLOW

RATE

c.f.m.

FLOW

RATE

c.f.m.

FLOW

RATE

c.f.m.

FLOW

RATE

c.f.m.

N.C. N.C. N.C. N.C. N.C.

ENGINEERING PERFORMANCE DATA >�7���� ��A����������������� ��������;�"��Q��Y��)

SH.SDI.F (RETURN)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?j

in.w.g.

P

in.w.g.

P

in.w.g.

P

in.w.g.

P

in.w.g.

P

SIZE :

NECK AREA :

P :

NC :

Is the nom-

inal neck size in

inches.Is in

square feet.Return pre-

s s u r e d r o p i n

inches water gage.Room NC for

return based on

8db room effect.

6"x6"

[0.25]

9"x9"

[0.56]

12"x12"

[1.00]

15"x15"

[1.56]

50 900 250 300 600

100 100 200 350 600

200 75 250 400 700

400 150 250 550 875

200 225 250 240 240

179 263 267 233 228

200 150 266 229 233

256 238 221 275 250

0.011 0.016 0.021 0.019 0.019

0.007 0.024 0.024 0.018 0.017

0.011 0.001 0.024 0.017 0.018

0.022 0.019 0.015 0.026 0.021

<18

18

24 22 26

20 23

21 25 25

22 26 26

75 1250 325 400 800

150 125 250 475 825

300 125 325 550 950

525 200 350 700 1150

300 313 325 320 320

268 329 333 317 314

300 250 346 314 317

337 317 310 350 329

0.031 0.034 0.037 0.036 0.036

0.025 0.038 0.039 0.035 0.034

0.031 0.021 0.042 0.034 0.035

0.040 0.035 0.033 0.043 0.038

29 24 25

22

29

19

18

19 23 27

23

28

23

19

25 28 29

26 21

18

24

20

32 30

100 1600 400 500 1000

200 150 300 600 1050

400 175 400 700 1200

650 250 450 850 1425

400 400 400 400 400

357 395 400 400 399

400 350 426 400 400

417 397 398 425 407

0.055 0.055 0.055 0.055 0.055

0.045 0.054 0.055 0.055 0.055

0.055 0.043 0.063 0.055 0.055

0.060 0.054 0.055 0.063 0.057

20 34 31 31 33

22 21 27 32 33

29 22

19

28 33 34

31 27 30 36 33

125 1950 475 600 1200

250 175 350 725 1275

500 225 475 850 1450

775 300 550 1000 1700

500 488 475 480 480

446 461 467 483 485

500 450 505 486 483

497 476 487 500 486

0.086 0.082 0.078 0.080 0.080

0.069 0.074 0.076 0.081 0.081

0.086 0.071 0.088 0.082 0.081

0.085 0.079 0.082 0.086 0.082

24 37 35 34 37

26 23 29 35 37

34 26 33 35 38

36 30 34 40 37

150 2300 550 700 1400

300 200 400 850 1500

600 275 550 1000 1700

900 350 650 1150 1975

600 575 550 560 560

536 526 533 567 570

600 550 585 571 567

577 556 575 575 564

0.125 0.115 0.106 0.109 0.109

0.100 0.096 0.099 0.112 0.113

0.125 0.106 0.119 0.114 0.112

0.116 0.108 0.115 0.115 0.111

28 43 39 37 41

30 26 33 38 42

38 31 36 39 43

38 34 36 42 41

175 2650 625 800 1600

350 225 450 975 1725

700 325 625 1150 1950

1025 400 750 1300 2250

700 663 625 640 640

625 592 600 650 656

700 650 665 657 650

657 635 664 650 643

0.170 0.153 0.136 0.143 0.143

0.136 0.122 0.125 0.148 0.150

0.170 0.148 0.154 0.151 0.148

0.151 0.141 0.154 0.148 0.144

33 50 42 41 46

34 29 36 43 46

43 36 39 45 47

43 38 42 45 46

200 3000 700 900 1800

400 250 500 1100 1950

800 375 700 1300 2200

1150 450 850 1450 2525

800 750 700 720 720

714 658 667 733 741

800 750 745 743 733

737 714 752 72 721

0.220 0.195 0.170 0.180 0.180

0.177 0.151 0.155 0.187 0.191

0.186 0.195 0.193 0.192 0.187

0.189 0.177 0.196 0.183 0.181

37 56 45 44 49

39 32 39 47 51

47 42 43 49 51

48 41 47 49 51

225 3350 775 1000 2000

450 275 550 1225 2175

900 425 775 1450 2450

1275 500 950 1600 2800

900 838 775 800 800

804 724 733 817 827

900 850 824 829 817

817 794 841 800 800

0.270 0.239 0.208 0.220 0.220

0.222 0.182 0.187 0.229 0.234

0.270 0.245 0.232 0.234 0.226

0.229 0.217 0.241 0.220 0.220

41 60 48 48 53

42 36 43 52 55

50 48 46 53 56

52 46 51 53 54

<18

<18

24"x24"

[4.00]

6"x24"

[1.00]

12"x15"

[1.25]

15"x24"

[2.5]

6"x9"

[0.38]

9"x12"

[0.75]

12"x18"

[1.50]

18"x21"

[2.63]

6"x12"

[0.50]

9"x15"

[0.94]

12"x21"

[1.75]

18"x24"

[3.00]

6"x15" 9"x18" 12"x24" 21"x24"

[0.63] [1.13] [2.00] [3.50]

18"x18"

[2.25]

21"x21"

[3.06]

500 200 325 450

700 200 350 525

222 267 248 239

229 227 233 240

0.015 0.024 0.021 0.019

0.017 0.016 0.018 0.019

20 23 24

26 23 24

700 250 425 600

950 275 475 700

311 333 324 319

310 313 317 320

0.034 0.039 0.037 0.036

0.033 0.034 0.035 0.036

28

22

24 26 27

29 24

21

27 27

900 300 525 750

1200 350 600 875

400 400 401 399

392 398 400 400

0.055 0.055 0.055 0.055

0.053 0.054 0.055 0.055

34 28 31 32

34 30 33 32

1100 350 625 900

1450 425 725 1050

489 467 477 479

474 438 483 479

0.083 0.076 0.079 0.079

0.078 0.081 0.081 0.079

38 31 34 35

38 34 37 36

1300 400 725 1050

1700 500 850 1225

578 533 553 559

556 568 567 559

0.116 0.099 0.107 0.109

0.108 0.113 0.112 0.109

41 34 38 40

43 37 41 40

1500 450 825 1200

1950 575 975 1400

667 600 630 638

637 653 650 639

0.155 0.125 0.139 0.142

0.142 0.149 0.148 0.143

47 37 42 43

47 41 46 45

1700 500 925 1350

2200 650 1100 1575

756 667 706 718

719 739 733 719

0.198 0.155 0.173 0.179

0.180 0.190 0.187 0.180

53 40 44 47

54 45 50 48

1900 550 1025 1500

2450 725 1225 1750

844 733 782 798

801 824 817 799

0.242 0.187 0.211 0.219

0.221 0.232 0.229 0.220

56 45 47 50

60 50 54 51

6"x18" 9"x21" 15"x18"

[0.75] [1.31] [1.88]

6"x21" 9"x24" 15"x21"

[0.88] [1.50] [2.19]

Page 13: Square Ceiling Diffusers

CURVED BLADE CEILING

& GRILLESDIFFUSERS

APPLICATIONS

Shahrokhi curved blade ceiling diffusers &

grilles are designed to suit H.V.A.C

applications for ceiling mounting.These diffusers are used for supply, return

and exhaust air which provide a stable

pattern of air diffusion flowing through

curved blades (Figure 6).These vanes are able to provide 1,2,3 or 4

way air flow patterns (Figure 7).

����������� ��������Fk�����

�����

��������� ��������Fk����������������� ���������

�����$��%&'����(���&�� ������������)�*����+�����

,�- ���+. �/�0������(1-���2&�����!�"#�

����3� ��456$����7����8�9�� �������)����������:�

@<+Fk�� �������G��$� �� �������)�=6������-�+�

,>g�@<+A��&����B�C-

,>h�@<+A��-� ��K�/

������F �H�� �����)��� �� ����=6���45��I��������:�

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI??

SH.SDI.CB1

SH.SDI.CB2

SH.SDI.CB3

SH.SDI.CB4

Page 14: Square Ceiling Diffusers

DESCRIPTION

Shahrokhi curved blade ceiling diffusers

install easily over the square duct or round

duct with an adaptor (Figure 18 ).Blades of these diffusers can be moved or

fixed around the auxial pins (Figure 8 ).Nylon bushing or line spring are used to

seperate the blades from the frame to

eliminate rattling and to provide positive

tension when adjusting them.

;�Q4X�$

-��T����*���+�Fk����������������� ��������

�����Y��-�� ���@��"$�H��G��$��������������Y��-�� ��

,�>?Z�@<+A��-�+��(1-

��*� D�������Q��Y�.�� �$�� ��������!�-�:� � ������

,>Z�@<+A���V-���������l�Q3�

������R � �'�Km.���2&�����L�I�R ����������V-� �)���)

(4$�$�:��������+������3� ��#*���&9�������<43�k�

,�-�4���� �I�=7� ��4-��Q$��������8E42&$����R���

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?J

Page 15: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?N

A

A=9

A=11

A=13

A=14

Lt

Ld

9 X1.00 X1.000.10XLt

0.12XLt

0.25XLt

0.40XLt

X0.75 X0.80

X0.60 X0.65

X0.50 X0.50

11

13

14

A(mm.) L t Ld P t

7

8

9

10

11

12

300 225 150 75

400 300 200 100

800 600 400 200

1200 900 600 300

1600 1200 800 400

2000 1500 1000 500

CEILINGHEIGHT (ft)

MAX C.F.M. PER SIDE

SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1

Page 16: Square Ceiling Diffusers

FRAME

MATERIAL & FINISH

Three types A,B,C of frame (figure 3) are

available up on request.Select the type of frame is relative to

installation of diffusers location.

High quality 1.25mm. thickness extruded

aluminium profile in matt aluminium

anodized finish for blades and frames.White polyester liquid or powder coating

finish is also available or any other specified

color with raul code up on requirement.

L�I

a-����� ��

M�3�������� �*�������&��>N�@<+A L�I�!�-���A,B,C

O3P����������(1-�@Q�����L�I�!�-�L�63- �,��+���

,�� �

?bJW����6X����77� @49����R �������������IB�4&4��FT

(��&���44���� ��+�D� ��-T�=�������3V454�B�4&4��FT

,�-�+���4�$

=+�������������-� D4�T�a-������� ����)����<� �:�

�3� 5��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�

R�4-�����)�$����d67��Y �����V+���� �O���a-��������4�

,��+�B�C-

ORDERING CODE

Shahrokhi curved blade ceiling diffusers &

grilles are specified with following ordering

code.

�������

�������� ��������Fk������������������� ��������

,�-�+��d67����R�����������*���+����

SH : Shahrokhi manufacture

SDI : Square ceiling diffuser

T : type : CB1 : Oneway curved blade

CB2 : Two way curved blade

CB3 : Three way curved blade

CB4 : Four way curved blade

WxHxk : Width (inch) x Height (inch) x Blades way (Figure 7)

*���+��-�*��� : SH

���������������� : SDI

Fk� ��� �9�/�H� : CB1 : ����� !�- : T

e�^�>f&� A !�$� �>f&� A >h�@<+A����������)x x : W x H x k

Fk� ��� �9�/ �� : CB2

Fk� ��� �9�/ �� : CB3

Fk� ��� �9�/���� : CB4

SH.SDI.T-W x H x k

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?S

Page 17: Square Ceiling Diffusers

SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

SH.SDI.CB

50

80

130

180

250

310

556

500

520

514

521

492

0.019

0.016

0.017

0.016

0.017

0.015

24

25

26

26

26

26

13

20 20

33 33

45 45

63 63

78 78

19

30

49

68

94

116

13 13

20

33

45

63

78

25

40

65

90

125

155

50

80

130

180

250

310

2

3 3

4 4

4 4

5 5

6 6

2

3

4

4

5

6

3

4

5

6

7

8

5

6

9

10

12

13

2 1

2

2

2

2

3

3

4 4

6 6

6 6

7 7

8 8

4

5

6

8

9

10

3

6

7

9

10

12

7

9

12

13

16

17

3 2

3

3

5

6

7

60

100

160

225

310

390

667

625

640

643

646

619

0.028

0.024

0.026

0.026

0.026

0.024

25

26

27

27

27

27

15

25 25

40 40

56 56

78 78

98 98

23

38

60

84

116

146

15 15

25

40

56

78

98

30

50

80

113

155

195

60

100

160

225

310

390

3

4 4

5 5

5 5

6 6

7 7

3

3

4

6

7

8

4

5

7

8

9

10

6

8

10

13

15

17

3 2

2

2

3

4

5

5

6 6

7 7

8 8

9 9

10 10

4

6

8

10

12

13

5

7

9

11

12

13

8

11

14

16

19

21

5 2

3

5

7

9

10

70

120

190

270

370

470

778

750

760

771

771

746

0.038

0.035

0.036

0.037

0.037

0.035

26

27

28

28

28

28

18

30 30

48 48

68 68

93 93

118 118

26

45

71

101

139

176

18 18

30

48

68

93

118

35

60

95

135

185

235

70

120

190

270

370

470

4

5 5

6 6

6 6

7 7

9 9

3

4

6

7

8

9

4

7

8

10

10

12

7

9

12

14

16

18

4 2

2

3

4

5

6

5

7 7

9 9

9 9

11 11

12 12

5

7

10

11

14

15

6

9

11

12

15

15

9

13

16

19

23

25

5 3

4

7

8

11

12

80

140

220

315

430

550

889

875

880

900

896

873

0.049

0.048

0.048

0.050

0.050

0.048

27

28

29

29

29

29

20

35 35

55 55

79 79

108 108

138 138

30

53

83

118

161

206

20 20

35

55

79

108

138

40

70

110

158

215

275

80

140

220

315

430

550

4

6 6

7 7

8 8

9 9

11 11

5

6

7

8

10

10

6

7

9

11

12

14

8

10

13

16

18

20

4 3

3

4

5

7

7

6

9 9

10 10

11 11

13 13

14 14

6

9

12

14

16

18

7

10

12

15

17

18

11

15

19

23

27

29

6 3

6

9

11

13

15

90

160

250

360

490

630

1000

1000

1000

1029

1021

1000

0.062

0.062

0.062

0.066

0.065

0.062

28

29

30

30

30

30

23

40 40

63 63

90 90

123 123

158 158

34

60

94

135

184

236

23 23

40

63

90

123

158

45

80

125

180

245

315

90

160

250

360

490

630

5

7 7

8 8

9 9

10 10

12 12

5

7

8

10

11

13

6

8

10

12

14

16

9

12

15

18

21

24

5 3

4

5

7

8

10

6

9 9

11 11

13 13

15 15

17 17

7

10

13

16

19

21

8

11

14

18

20

22

12

18

22

26

31

34

6 4

7

10

12

16

17

100

180

280

405

550

710

1111

1125

1120

1157

1146

1127

0.077

0.079

0.078

0.083

0.082

0.079

29

30

34

34

34

34

25

45 45

70 70

101 101

138 138

178 178

38

68

105

152

206

266

25 25

45

70

101

138

178

50

90

140

203

275

355

100

180

280

405

550

710

5

8 8

9 9

10 10

12 12

13 13

6

8

9

12

13

14

7

9

11

13

16

18

10

13

16

19

23

25

5 3

5

6

9

10

11

6

10 10

12 12

14 14

17 17

19 19

7

12

14

18

21

23

9

12

16

19

22

26

13

19

24

27

33

37

6 4

9

11

15

17

19

110

200

310

450

610

790

1222

1250

1240

1286

1271

1254

0.093

0.097

0.096

0.103

0.101

0.098

30

33

37

37

37

37

28

50 50

78 78

113 113

153 153

198 198

41

75

116

169

229

296

28 28

50

78

113

153

198

55

100

155

225

305

395

110

200

310

450

610

790

5

8 8

9 9

11 11

13 13

15 15

6

9

10

13

14

16

7

10

13

15

18

20

10

14

18

22

25

28

5 3

6

7

10

11

13

7

11 11

14 14

16 16

18 18

21 21

8

13

16

19

23

26

10

14

18

21

25

29

15

21

27

32

37

42

7 5

10

12

16

19

23

120

220

340

495

670

870

1333

1375

1360

1414

1396

1381

0.111

0.118

0.115

0.125

0.121

0.119

35

35

40

40

40

40

30

55 55

85 85

124 124

168 168

218 218

45

83

128

186

251

326

30 30

55

85

124

168

218

60

110

170

248

335

435

120

220

340

495

670

870

6

8 8

10 10

12 12

14 14

16 16

6

9

11

13

15

17

8

11

14

17

19

22

12

16

20

24

28

32

6 3

6

8

10

12

14

8

12 12

15 15

17 17

20 20

23 23

9

14

18

21

25

28

11

16

20

23

27

31

17

23

29

36

40

46

8 6

11

14

17

22

25

ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?W

AK

SIZE

(in )Xin

(sq.ft)in.w.g.

PT

6"x6"

[0.09]

8"x8"

[0.16]

10"x10"

[0.25]

12"x12"

[0.35]

14"x14"

[0.48]

16"x16"

[0.63]

Page 18: Square Ceiling Diffusers

SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

400

500

600

725

1100

1300

500

510

500

518

500

500

0.016

0.016

0.016

0.017

0.016

0.016

26

26

27

27

27

27

100 100

125 125

150 150

181 181

275 275

325 325

150

188

225

272

413

488

100

125

150

181

275

325

200

250

300

363

550

650

400

500

600

725

1100

1300

7 7

7 7

8 8

9 9

11 11

12 12

7

8

9

10

12

13

9

10

11

12

15

16

15

17

18

20

25

27

4

5

6

7

9

10

9 9

10 10

12 12

13 13

16 16

17 17

12

13

14

15

19

21

13

14

16

18

22

24

19

21

23

25

31

34

9

10

11

12

16

18

500

625

750

910

1350

1625

625

638

625

650

614

625

0.024

0.025

0.024

0.026

0.023

0.024

27

27

28

28

28

28

125 125

156 156

188 188

228 228

338 338

406 406

188

234

281

341

506

609

125

156

188

228

338

406

250

313

375

455

675

813

500

625

750

910

1350

1625

8 8

9 9

10 10

11 11

13 13

15 15

8

10

11

12

14

16

12

13

13

16

18

21

19

21

23

25

30

35

5

7

8

9

11

13

11 11

13 13

14 14

16 16

19 19

21 21

14

16

17

19

23

26

16

19

19

22

25

31

24

27

29

32

38

45

11

13

14

16

20

23

600

750

900

1095

1600

1950

750

765

750

782

727

750

0.035

0.037

0.035

0.038

0.033

0.035

28

28

29

29

29

29

150 150

188 188

225 225

274 274

400 400

488 488

225

281

338

411

600

731

150

188

225

274

400

488

300

375

450

548

800

975

600

750

900

1095

1600

1950

10 10

11 11

12 12

13 13

15 15

17 17

10

12

12

14

16

18

13

16

16

18

22

24

21

23

26

29

35

39

7

9

9

11

13

15

14 14

15 15

17 17

19 19

22 22

25 25

17

19

21

23

27

31

19

21

24

26

32

34

28

32

34

38

46

51

14

16

18

20

24

28

700

875

1050

1280

1850

2275

875

893

875

914

841

875

0.048

0.050

0.048

0.052

0.044

0.048

29

29

30

30

30

30

175 175

219 219

263 263

320 320

463 463

569 569

263

328

394

480

694

853

175

219

263

320

463

569

350

438

525

640

925

1138

700

875

1050

1280

1850

2275

11 11

13 13

15 15

16 16

18 18

21 21

12

14

14

16

19

21

16

18

20

22

25

29

23

26

28

31

38

42

9

11

11

13

16

18

16 16

18 18

20 20

22 22

26 26

29 29

20

22

24

27

31

35

21

24

26

30

35

39

32

38

40

45

53

59

17

19

21

24

28

32

800

1000

1200

1465

2100

2600

1000

1020

1000

1046

955

1000

0.062

0.065

0.062

0.068

0.057

0.062

30

30

35

35

37

37

200 200

250 250

300 300

366 366

525 525

650 650

300

375

450

549

788

975

200

250

300

366

525

650

400

500

600

733

1050

1300

800

1000

1200

1465

2100

2600

13 13

14 14

16 16

18 18

21 21

24 24

15

15

17

19

22

25

18

20

22

24

28

33

27

29

33

36

41

48

12

13

14

16

19

22

19 19

20 20

23 23

25 25

29 29

34 34

24

26

28

31

35

41

25

28

30

34

39

45

38

42

46

51

60

68

21

23

25

28

32

38

900

1125

1350

1650

2350

2925

1125

1148

1125

1179

1068

1125

0.079

0.082

0.079

0.087

0.071

0.079

34

34

37

37

42

42

225 225

281 281

338 338

413 413

588 588

731 731

338

422

506

619

881

1097

225

281

338

413

588

731

450

563

675

825

1175

1463

900

1125

1350

1650

2350

15 15

17 17

18 18

20 20

23 23

26 26

16

17

19

21

25

28

20

23

25

27

32

36

29

32

35

39

46

13

14

16

18

22

25

21 21

24 24

26 26

28 28

32 32

39 39

25

28

31

34

41

45

29

31

35

39

45

49

42

49

51

57

68

22

25

28

30

37

42

1000

1250

1500

1835

2600

3250

1250

1276

1250

1311

1182

1250

0.097

0.101

0.097

0.107

0.087

0.097

37

37

40

40

44

44

250 250

313 313

375 375

459 459

650 650

813 813

375

469

563

688

975

1219

250

313

375

459

650

813

500

625

750

918

1300

1625

1000

1250

1500

1835

2600

17 17

19 19

20 20

22 22

25 25

30 30

18

20

22

25

27

32

22

25

28

31

35

39

33

36

40

43

48

15

17

19

22

23

29

23 23

26 26

29 29

32 32

36 36

43 43

28

31

36

39

44

51

34

35

39

43

49

58

49

53

59

64

73

25

28

33

36

41

48

1100

1375

1650

2020

2850

3575

1375

1403

1375

1443

1295

1375

0.118

0.123

0.118

0.130

0.105

0.118

40

40

44

44

45

45

275 275

344 344

413 413

505 505

713 713

894 894

413

516

619

758

1069

1341

275

344

413

505

713

894

550

688

825

1010

1425

1788

1100

1375

1650

2020

18 18

20 20

22 22

25 25

28 28

32 32

20

22

24

27

30

34

25

28

31

34

37

45

37

41

43

48

17

19

21

23

27

31

26 26

28 28

32 32

35 35

39 39

46 46

31

34

39

42

48

56

35

39

42

47

53

64

53

58

63

70

27

31

36

39

45

52

ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)

SH.SDI.CB

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?g

AK

SIZE

(in )Xin

(sq.ft)in.w.g.

PT

18"x18"

[0.80]

20"x20"

[0.98]

22"x22"

[1.20]

24"x24”

[1.40]

30"x30”

[2.20]

34"x34”

[2.60]

Page 19: Square Ceiling Diffusers

SH.SDI.CB4 SH.SDI.CB3 SH.SDI.CB2 SH.SDI.CB1

A A A AA A A AA A A AB B B BB B B BB B B B

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE

c.f.m.

SIDE THROW SIDE THROW SIDE THROW SIDE THROW

MIN MIN MIN MINMAX MAX MAX MAX

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

N.C.

1600

2200

2600

2900

500

500

500

509

0.016

0.016

0.016

0.016

27

27

27

29

400

550 550

650 650

725 725

600

825

975

1088

400

550

650

725

800

1100

1300

1450

1600

2200

2600

2900

14 14

16 16

17 17

18 18

14

17

18

19

18

21

23

25

30

36

38

40

11

14

15

16

19 19

22 22

24 24

25 25

22

28

29

31

26

31

33

35

38

45

49

51

18

25

26

28

2000

2750

3275

3625

625

625

630

636

0.024

0.024

0.025

0.025

28

28

28

30

500

688 688

819 819

906 906

750

1031

1228

1359

500

688

819

906

1000

1375

1638

1813

2000

2750

3275

3625

16 16

19 19

21 21

22 22

18

20

23

24

24

27

29

32

36

44

48

51

15

17

20

21

24 24

27 27

30 30

33 33

28

32

35

39

33

38

39

43

48

57

61

65

25

28

32

36

2400

3300

3950

4350

750

750

760

763

0.035

0.035

0.036

0.036

29

29

29

37

600

825 825

988 988

1088 1088

900

1238

1481

1631

600

825

988

1088

1200

1650

1975

2175

2400

3300

3950

19 19

24 24

25 25

27 27

21

25

26

29

27

32

35

37

43

50

54

18

22

23

26

27 27

33 33

35 35

37 37

33

39

43

47

38

46

48

51

57

66

69

30

36

41

43

2800

3850

4625

5075

875

875

889

890

0.048

0.048

0.049

0.049

30

30

30

43

700

963 963

1156 1156

1269 1269

1050

1444

1734

1903

700

963

1156

1269

1400

1925

2313

2538

280024 24

27 27

30 30

31 31

24

28

30

32

31

36

40

43

4721

25

27

29

32 32

36 36

42 42

43 43

39

46

50

54

43

49

55

58

6736

43

47

51

3200

4400

5300

5800

1000

1000

1019

1018

0.062

0.062

0.065

0.065

37

37

37

44

800

1100 1100

1325 1325

1450 1450

1200

1650

1988

2175

800

1100

1325

1450

1600

2200

2650

2900

320026 26

30 30

35 35

35 35

29

33

37

38

36

42

47

50

5526

30

33

35

37 37

44 44

50 50

50 50

46

54

59

62

50

58

64

68

7643

50

54

58

3600

4950

5975

6525

1125

1125

1149

1145

0.079

0.079

0.082

0.082

42

42

42

45

900

1238 1238

1494 1494

1631 1631

1350

1856

2241

2447

900

1238

1494

1631

1800

2475

2988

29 29

33 33

39 39

41 41

31

37

40

43

39

45

53

28

34

37

40

41 41

48 48

56 56

59 59

50

59

66

67

55

65

74

47

55

62

63

4000

5500

6650

7250

1250

1250

1279

1272

0.097

0.097

0.102

0.101

44

44

44

46

1000

1375 1375

1663 1663

1813 1813

1500

2063

1000

1375

200033 33

37 37

43 43

45 45

37

40

4633

37

47 47

53 53

60 60

65 65

56

64

6552

61

4400

6050

7325

7975

1375

1375

1409

1399

0.118

0.118

0.124

0.122

45

45

45

47

1100

400

500

600

700

800

900

1000

1100

1513 1513

1831 1831

1994 1994

1650

2269

1100

1513

220037 37

43 43

47 47

49 49

39

46

4936

43

51 51

60 60

67 67

70 70

62

73

7058

69

ENGINEERING PERFORMANCE DATA Fk���������������� ��������;�"��Q��Y��)

SIZE :

AK :

P :

Throw :

NC :

Is the listed size in inches.

Outlet area in square feet.

Total pressure in inches water gage.

In feet corresponding to 135&65 f.p.m. terminal velocity.

Room NC for supply based on 18db room effect.

A A

B

B

SH.SDI.CB

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?h

AK

SIZE

(in )Xin

(sq.ft)in.w.g.

PT

T

36"x36"

[3.20]

42"x42"

[4.40]

46"x46"

[5.20]

48"x48”

[5.70]

Page 20: Square Ceiling Diffusers

PERFORATED FACE CEILING

DIFFUSERS & GRILLES

APPLICATION

Shahrokhi perforated face ceiling diffusers &

grilles with spot air diffusion flowing ability

designed to suit H.V.A.C applications for use

in surgery rooms in hospitals or equal

spaces. These diffusers are used for supply

and exhaust air and provides a stable

pattern of air diffusion flowing (Figure 9).

DESCRIPTION

Shahrokhi perforated face ceiling diffusers

have a face which punched with 15mm.

diameter holes and install easily over the

square duct or round duct with an adaptor

(Figure 18).

����������� ��������@V^�n�$

�����

��������� �������@V^�n��$ ������������� ���������

�#�-�;��1�� �����&&��=6���45��I����*���+�����

���2&�����!�"#������$��%&'����(��&�� �������� ��)

���7� ���3� ����<����������-�3���V4��@V^� ��I�$ ���

,�- ���+�. �/

���-�+������3� ��456$����9�� �����)���������:�

,>i@<+A�&����B�C- ��* �&<��;��1�� � �������)�=6�

;�Q4X�$

� ��*����+�@�V^�n��$ �������������� ��������

�� ��3V454��?W��#I������* ���������+�f-����Q'�H�

���@��"$�H��G��$������������Y�-��� ��-��T������

,>?Z�@<+A�-�+��(1-�����Y�-��

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI ?Z

SH.SDI.PF

Page 21: Square Ceiling Diffusers

MATERIAL & FINISH

High quality 1.25mm. thickness extruded

aluminium profile for frames and 1mm.

thickness aluminium sheet for face in matt

aluminium anodized finish.White polyester liquid or powder coating

finish is also available or any other specified

color with raul code up on requirement.

a-����� ��

�3V454��?bJW����6X����77��B�4&4��FT�@49����R �����I

=�������3V454��H�����6X����B�4&4��FT�n���R ��Q'��

,�-�+���4�$�(��&���44�����B�4&4��FT���+�D� ��-T

=+���������������- R4�T�a-������� ����)����<� �:��

�3� F��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�

����)�$�����d67��Y ������V+���� �O���a-�����������4�

,��+�B�C- �R�4-

ORDERING CODE

Shahrokhi perforated face ceiling diffusers

& grilles with following ordering code are

specified.

�������

������������� ������@V^�n�$ ������������ �������

,�-�+��d67����R�����������*���+

Shahrokhi manufacture

Square ceiling diffuser

: Perforated face

Width (inch) x Height (inch)

SH :

SDI :

PF

WxH :

*���+��-�*��� : SH

���������������� : SDI

@V^�n�$ : PF

e�^�>f&� A !�$� �>f&� Ax : W x H

SH.SDI.PF-W x H

These diffusers have an ability in adjust the

air flow patterns without change in air

volume, pressure and sound level.

FRAME

Three types A,B,C of frame (figure 3) are

available up on request.Select the type of frame is relative to

installation of diffusers location.

�-�O�4������� �� ��� �����\�E42&$��45��I���������:�

,�-� �� ��� �'�� D4������79�8EC.��� �44o$

L�I

M�3�������� �*�������&��>N�@<+A L�I�!�-���A,B,C

O3P����������(1-�@Q�����L�I�!�-�L�63- �,��+���

,�� �

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI?i

Page 22: Square Ceiling Diffusers

CONTROL GRIDS

Control grids are used for control airflow

patterns in a branch ducts and into the neck

of diffusers.These control grids made of a frame and a

number of blades in aluminium which can be

adjust them in desire angles to uniform air

flow.

Y�3&�� ���<"+

�-����������%7- � ���Y�-����� ����� �����\�Y�3&����)

,��+�����3� �Y�3&�� ���<"+�R � ��� �������� ����

��4&4��FT����� � �%$���L�I�H��R �Y�3&�� ���<"+�:�

��� �R���� �����-T�� �$�������- ���+�@4<7$�E42&$�@���I

,��V-�E42&$� ��� �����\����V-�:OV����2&� ����2-�����

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Jj

SH.SDI.PF

ENGINEERING PERFORMANCE DATA @V^�n�$ ������������ ��������;�"��Q��Y��)

3<20

4<20

522

624

729

833

937

1040

4<20

5<20

621

722

825

929

1035

1139

5<20

6<20

8<20

1022

1226

1334

1543

1648

0.002169100

0.003212125

0.004254150

0.005297175

0.007339200

0.009381225

0.011424250

0.014466275

0.001112100

0.002168150

0.003223200

0.005279250

0.007335300

0.010391350

0.012447400

0.016503450

0.002158200

0.004237300

0.006316400

0.010395500

0.014474600

0.019553700

0.025632800

0.032711900

NECK

VEL.

f.p.m.

NECK

VEL.

f.p.m.

FLOW

RATE

c.f.m.

FLOW

RATE

c.f.m.

N.C. N.C.

THROW THROW

f t. f t.

N.C. N.C.

7<20

8<20

10<20

1222

1328

1435

1644

1752

8<20

9<20

1022

1225

1330

1534

1737

1840

0.002169300

0.003225400

0.005282500

0.007338600

0.010395700

0.013451800

0.016507900

0.0205641000

0.002172400

0.003226525

0.005280650

0.007334775

0.009388900

0.0124421025

0.0154951150

0.0195491275

SIZE :AK :P :THROW :

NC :

Is the listed size in inches.Outlet area in square feet.

Total pressure in inches water gage.In feet horizontal ceiling air

pattern based on 100 f.p.m. terminal

velocity.NC based on 10db room attenuation.

AK

SIZE

(in )Xin

(sq.ft)

AK

SIZE

(in )Xin

(sq.ft)in.w.g.

PT

in.w.g.

PT

T

12"x12"

[0.59]

15"x15"

[0.90]

18"x18"

[1.27]

21"x21"

[1.77]

24"x24"

[2.32]

Page 23: Square Ceiling Diffusers

CONE SQUARE CEILING DIFFUSERS

APPLICATION

Shahrokhi cone square ceiling diffusers

have a number of conic nozzles to air flow

patterns which these nozzles are used in

high ceiling spaces, great air flow and throw

such as factories halls, sport halls, exhibition

halls, industrial kitchens, computer centers,

despatching centers and etc.The nozzles are designed to local air

handled each special space.

DESCRIPTION

These nozzles are constructed in two

sizes(figure 10) and it is possible to install

them over the duct surfaces or special

boxes.Through these nozzles can be adjust the air

flow patterns way with use of different duct

surfaces or box angles.Gasket are used to seperate the nozzles

from the box to eliminate rattling.

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���-�<�������YR�-�:� �����-� �� ����� �����)�/��6�

�&-����������R����$�������� ���� \�������8c$��� ��0�����

����:F���8�+R��� ����:F���8;��C-�*���� ����:F��

D� ���8 �$�4������D� ���83%&'� ���-�*D�+T�8��O7��V-

,�-�4���� �I����3� ��������4p���$ ���6�

���<��������&- ��$������+����� �-��O�����YR�-�. �/

,�&&��-��� ��%X���;��'���� ��'�*

;�Q4X�$

� �$����>?j�@<+A��-�+���3*����R �- ���������YR�-�:�

,��V-�(1-�q�16������"%)����Y�-�����)�� ��� ���-T

R ����3� ���� �� ����� ���;��)�� �$����YR�-�:� ��54���

,��V-�E42&$��"%)����Y�-�����)��0536�� �� �R

�+ ��R � �'�Km.���2&������"%)�R ���YR�-����V-� �)���)

,��+�����3� �<43�\

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SH.SDI.C

Page 24: Square Ceiling Diffusers

MATERIAL & FINISH

High quality 0.6mm. thickness carriage

extruded aluminium sheet for the nozzles

and 1mm thickness aluminium sheet for the

box in matt aluminium anodized finish.White polyester liquid or powder coating

finish is also available or any other specified

color with raul code up on requirement.

a-����� ��

jbg�����6X������+����-77� B��4&4��FT�n�� R ���YR�-

�3V454��H�����6X����B�4&4��FT�n���R ����"%)����3V454�

�4�$�(���&���44������B���4&4��FT���+�D�� ����-T�=��� ��

,�-�+�

=+������ ������-� D4�T�a-� ����� � ��)����<� �:�

�3� 5��R ����3� ����>H4$�3� ��3<F A� ��������c����a-�

R�4-�����)�$����d67��Y �����V+���� �O���a-��������4�

,��+�B�C-

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JJ

Page 25: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJN

Shahrokhi manufacture

Square ceiling diffuser

Cone 100mm diameter

Cone 120mm diameter

SH :

SDI :

T : type : C100 :

C120 :

*���+��-�*��� : SH

���������������� : SDI

�3V454��?jj��#I����/��6� ������!�-: C100 : T

�3V454��?Jj��#I����/��6� : C120

SH.SDI.T

ORDERING CODE

Shahrokhi cone square ceiling diffusers with

following ordering code are specified.

�������

������*�����+��/��6�������������� ���������

,�-�+��d67����R�����

Page 26: Square Ceiling Diffusers

2529

2632

2736

2840

2945

3046

3148

3250

3352

50 263 595 0.022

65 342 774 0.037

80 421 952 0.057

95 500 1131 0.080

110 579 1310 0.107

125 658 1488 0.138

140 737 1667 0.173

155 816 1845 0.212

170 895 2024 0.255

100 0.190 0.084

SIZE

DIA

mm.

AK1

(sq.ft)

AK2

(sq.ft)

FLOW

RATE

c.f.m.

VK1

f.p.m.

VK2

f.p.m.

N.C.

ft.

THROW

SH.SDI.C100

2422

2528

2633

2739

2744

2847

2950

3053

3156

50 182 410 0.010

75 274 615 0.024

100 365 820 0.042

125 456 1025 0.065

150 547 1230 0.094

175 639 1434 0.128

200 730 1639 0.168

225 821 1844 0.212

250 912 2049 0.262

120 0.274 0.122

SIZE

DIA

mm.

AK1

(sq.ft)

AK2

(sq.ft)

FLOW

RATE

c.f.m.

VK1

f.p.m.

VK2

f.p.m.

N.C.

ft.

THROW

SH.SDI.C120

ENGINEERING PERFORMANCE DATA �3V454��?Jj��#I����/��6������������� ��������;�"��Q��Y��)

�3V454��?jj��#I����/��6������������� ��������;�"��Q��Y��)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JS

ENGINEERING PERFORMANCE DATA

in.w.g.

PT

in.w.g.

PT

SIZE :

AK1 :

AK2 :

VK1 :

VK1 :

P :

THROW :

NC :

Is the nominal diameter outlet neck size in mm.

Is the neck area in square feet for inlet.

Is the neck area in square feet for outlet.

Is the neck velocity in f.p.m. for inlet.

Is the neck velocity in f.p.m. for outlet.

Total pressure in inches water gage.

In feet based on 100 f.p.m. terminal velocity.

Room NC based on 18db room effect.

T

Page 27: Square Ceiling Diffusers

SPHERICAL SQUARE CEILING

DIFFUSERS

APPLICATION

Shahrokhi spherical square ceiling diffusers

with control ability in air flow patterns are

used for office buildings, Training spaces,

Laboratories,Amphitheaters, etc.These diffusers have a number of spherical

nozzles with 360 deg. rotation to air flow

patterns (Figure 11).

��������������� �������

�����

Y�3&���45��I����*���+� ��������������� �������

����[9�8 � � � ���-�V3*������%X���;��1�� ����=6�

,�-� �� ��������4p������$r�$��T�8������O7���RT�8+R��T

��)��)���Ngj�=*������ ���������YR�-����������:��

,>??�@<+A��-� �� ����� ��

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJW

SH.SDI.S45 SH.SDI.S85SH.SDI.S30

Page 28: Square Ceiling Diffusers

DESCRIPTION

The nozzles are constructed in three sizes

(Figure 12 & 13) and it is possible to install

them over the duct surfaces or special

boxes.Gasket are used to seperate the 85mm. DIA.

nozzles from the box to eliminate rattling.

;�Q4X�$

>?J�?N� ��@<+A��-�+���3*����R �- ���������YR�-�:�

q�16�� �����"%)����Y���-�����)�� ��� �����-T�� ��$���

,����(1-

����"%)�R �3V454��ZW��#I���� ����YR��- ���V-� �)���)

,��+�����3� �<43�\��+ ��R � �'�Km.��2&�

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Jg

1

Page 29: Square Ceiling Diffusers

Shahrokhi manufacture

Square ceiling diffuser

Spherical 30mm. DIA.

Spherical 45mm. DIA.

Spherical 85mm. DIA.

SH :

SDI :

T : type : S30 :

S45 :

S85 :

*���+��-�*��� : SH

���������������� : SDI

�3V454��Nj��#I���� ��� ������!�-: S30 : T

�3V454��SW��#I���� ���

�3V454��ZW��#I���� ���

: S45

: S85

SH.SDI.T

ORDERING CODE

Shahrokhi spherical square ceiling diffusers

with following ordering code are specified.

�������

�����������*����+� ��������������� �������

,�-�+��d67����R

MATERIAL & FINISH

The 30&45mm. DIA. nozzles are const-

ructed from special compressed plastic.The 85mm. DIA. nozzle constructed from

carriage extruded aluminium sheet with

0.6mm thickness.High quality 1mm. thickness aluminium

sheet in matt aluminium anodized finish for

boxes.White polyester liquid or powder coating

finish is also available for boxes & 85mm.

DIA. nozzle or any other specified color with

raul code up on requirement.

a-����� ��

����79�H43�k��R ���3V454��SW���Nj��#I���� ����YR��-

B�4&4��FT�n���R ��3V454��ZW��#I����YR�-�,�&+����q�16�

,�+�����3V454��jbg����6X������+����-77�

=��������3V454��H������6X����B��4&4��FT�n���R �����"%)

,�-�+���4�$�(��&���44�����B�4&4��FT���+�D� ��-T

YR��-�������"%)����-� D4�T�a-������� ����)�����<� �:�

������ ���c������a-� =+�������� ����3V454��ZW���#I���

a-����������4���3� �5��R �����3� ����>H4$�3� ���3<F A

,��+�B�C- �R�4-�����)�$����d67��Y �����V+���� �O��

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Page 30: Square Ceiling Diffusers

SH.SDI.S30

153

154

165

166

177

178

189

1910

2011

6 583 906 0.051

7 680 1057 0.070

8 777 1208 0.091

9 874 1360 0.115

10 971 1511 0.142

11 1068 1662 0.172

12 1165 1813 0.205

13 1262 1964 0.240

14 1359 2115 0.279

30 0.010 0.007

SIZE

DIA

mm.

AK1

(sq.ft)

AK2

(sq.ft)

FLOW

RATE

c.f.m.

VK1

f.p.m.

VK2

f.p.m.

N.C.

ft.

THROW

ENGINEERING PERFORMANCE DATA

ENGINEERING PERFORMANCE DATA

�3V454��Nj��#I���� ��������������� ��������;�"��Q��Y��)

�3V454��SW��#I���� ��������������� ��������;�"��Q��Y��)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI JZ

147

158

159

1610

1611

1712

1813

1914

2015

14 569 986 0.061

16 650 1127 0.079

18 732 1268 0.100

20 813 1408 0.124

22 894 1549 0.150

24 976 1690 0.178

26 1057 1831 0.209

28 1138 1972 0.242

30 1220 2113 0.278

45 0.025 0.014

SIZE

DIA

mm.

AK1

(sq.ft)

AK2

(sq.ft)

FLOW

RATE

c.f.m.

VK1

f.p.m.

VK2

f.p.m.

N.C.

ft.

THROW

SH.SDI.S45

in.w.g.

PT

in.w.g.

PT

Page 31: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHIJi

SH.SDI.S85

ENGINEERING PERFORMANCE DATA �3V454��ZW��#I���� ��������������� ��������;�"��Q��Y��)

1520

1521

1623

1625

1726

1827

1928

1929

2030

50 490 820 0.042

60 588 984 0.060

70 686 1148 0.082

80 784 1311 0.107

90 882 1475 0.136

100 980 1639 0.168

110 1078 1803 0.203

120 1176 1967 0.241

130 1275 2131 0.283

85 0.102 0.061

SIZE

DIA

mm.

AK1

(sq.ft)

AK2

(sq.ft)

FLOW

RATE

c.f.m.

VK1

f.p.m.

VK2

f.p.m.

N.C.

ft.

THROW

in.w.g.

PT

SIZE :

AK1 :

AK2 :

VK1 :

VK1 :

P :

THROW :

NC :

Is the nominal diameter outlet neck size in mm.

Is the neck area in square feet for inlet.

Is the neck area in square feet for outlet.

Is the neck velocity in f.p.m. for inlet.

Is the neck velocity in f.p.m. for outlet.

Total pressure in inches water gage.

In feet based on 100 f.p.m. terminal velocity.

Room NC based on 18db room effect.

T

Page 32: Square Ceiling Diffusers

SQUARE GRILLE DAMPERS

APPLICATION

Shahrokhi square grille dampers are used to

adjust the air flow rate or close the grilles if

neccessery.The blades of these grille dampers are

constructed in two type of parallel or oppo-

site.The levers, which used for adjusting the

parallel blades are constructable in three

types of receprocating, switch and key.It is possible to contact these levers to an

electrical key or a remote control system

where high ceiling or exposed ducts are not

available such as amphitheater,cinema, etc.Either can adjust the space optional

temperature by an electrical thermostat

which illustrates in control line.

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����)����@����c#I���)�R�4-�;��'������� �������)���

,�-�4���� �I����3� ������ ��

,�-�+���3*���Z�h��� R ���!�-�������������:� ���o4$

�-�+�����3� � R ��� ���o4$�E42&$���)����������

,�&+�����*���@��I� �45�����4s���8��7��!�-������

<��3<F ��45��H����� ������� �:� ������ ����)����<� �:�

�&5��0���H�������-�<���������� ��R �Y�3&��E3P4��H����

8�$r$��T� ��:F����&-���M�3���@��I��4p�������Y�-�����

,��V-�@13���� ����)����4p���V&4�

#��$�� �6F��� D4����� ��G4Q� ����� ����� �$��:4&�V�

��4���� �I ����9��4P���� ���<��3<F �;�3����$�H�

,��V-�E42&$

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Page 33: Square Ceiling Diffusers

DESCRIPTION

In opposite type (Figure 14) removal is by

spin a special screw.

;�Q4X�$

f4��H��� ����G��$����.�Y��3- �>?S�@<+A�Z���h�!�-���

,��4���;��'�q�16�

In receprocating type (Figure 15) the lever is

in the middle of the damper which removal is

at horizontal way.

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,�+�����9 ��T����.�Y��3- �!�-

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Page 34: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI NJ

In key type (Figure 17) the lever is over the

grille frame which removal is at vertical way.

Switch type (Figure 16) the lever is in the

corner of the damper which removal is at

spin way.

�39��� �I��������L�I� ���B�� �>?h�@<+A� �45��!�-���

,�+���� ��V^��T����.�Y��3- �!�-���

�39���� ��I�������t&�����B�� �>?g�@<+A��4s���!�-���

,�+���- �����T����.�Y��3- �!�-���

Page 35: Square Ceiling Diffusers

MATERIAL & FINISH

High quality 1.25mm. thickness extruded

aluminium profile in matt aluminium

anodized finish for key and opposite types.High quality 0.7mm. thickness aluminium

sheet finish for receprocating and switch

types.Either is possible to use 0.7mm. thickness

iron galvanized sheet for receprocating,

switch and opposite types.White polyester liquid or powder coating

finish is also available or any other specified

color with raul code up on request.

a-����� ��

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B�4&4���FT���+�D� ����-T�=���������3V454��?bJW�����6X

,�-�+���4�$�(��&���44����

����6X����B��4&4���FT�n���R ���4s��������7��! ���-

,�-�+���4�$��3V454��jbh

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���3� �Z���h�8�4s���8���7��! ��- ���)��3V454��jbh

,���

=+�������������-� D4�T�a-������� ����)����<� �:�

��3� 5�R ����3� ����>H4$�3� ���3<F A� ��������c����a-�

����)�$����d67��Y ������V+���� �O���a-���������4�

,��+�B�C- ��� �*��

ORDERING CODE

Shahrokhi square grille dampers with

following ordering code are specified.

�������

��R��������������*����+���������� ��������������

,�-�+� d67�

SH : Shahrokhi manufacture

GDS : Square grille damper

T : type : RH : Handling control receprocating type

Remote control receprocating typeRR :

SW : Swich type

KE : Key type

OP : Opposite type

W x H : Width (inch) x Height (inch)

*���+��-�*��� : SH

������������������ : GDS

3���Y�3&�������7� �����!�-: RH : : T

����� ��R �Y�3&�������7� : RR

�4s�� : SW

�45� : KE

h���Z : OP

e�^�>f&� A !�$� �>f&� Ax : W x H

SH.GDS.T-W x H

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Page 36: Square Ceiling Diffusers

6x6

9x9

9x9

12x12

12x12

15x15

15x15

15x15

18x18

5

6

8

8

10

10

12

14

12

4

4

4

6

6

6

6

6

8

18x18

18x18

21x21

21x21

21x21

21x21

24x24

24x24

24x24

8

8

8

8

8

8

8

8

8

14

16

14

16

18

20

16

18

20

SQUARE

NECK

(in in)x

SQUARE

NECK

(in in)x

ADAPTOR LISTED SIZES AVAILABLE

D

(in)

D

(in)

H

(in)

H

(in)

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Page 37: Square Ceiling Diffusers

DIFFUSERS FIXING DETAILS

A) The (Figure 19) shows the location of

screw holes on A,B,C frame types (Figure 3)

of diffusers.

B) The (Figure 20) shows fixing method for

D,E,F,G frame types (Figure 3) of diffusers.

��������(1-�;�4sD)

(1-���)�BR\ ����f4��v ����� @�Q��>?i�@<+A�>0F

,�������7-� ��>N�@<+A ����I������������A,B,C

����I�������������(1-�����/�>Jj�@<+A�>L

,�������7-� ��>N�@<+A

D,E,F,G

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Page 38: Square Ceiling Diffusers

>��+����.A�-�<P��YR�&�

>��+�@* �A�-�<P��YR�&�

�����&74�� �'�� D��4�

��3���V4�� ��I�$

��-�3���V4��'�1*���@V^� ��I�$

��3���V4����V^� ���[9

� � �w- �&� ��I�$

-�V3*����$�9�

'�1*��39�

��V^��39�

�-�� ���39�

�4��� ����3�

���D��5$������ ��=6��n�$

���$r$

x�3-���:F��

���P45�����)�P�

���-�6��3����M� ��

����O7���RT

���m�� ��&F��

���R�������V^� ���-�6��3�

�P���$�9������<-��

� ��3�����+R��� ����5�

���-�*����I

����O+��9��\���;��"/

�P"F ���O+��9

����O+��9�5' �;��"/

���R�o��8���������

+R��� ��:F��

a&4F���:F��

�&+� ���63�

�/������$�9��8���-�*���

H����;�C-�*���

y�D��;�C-�*���

@3������-�V3*���8��-�V$���T� ��I�$

H-���8dI��n�$ �8��@3�� ��&F��

@3����V^� ���[9

��a&4�����8���-�6��73*��8���-�*D�+T

Residences (suburbia)

Residences (urban)

Music Auditoriums

Radio and Tv Broadcasting

Theatres

Assembly Hall

Mosques, churches

Libraries and Schools

Laboratories

Recreation Halls

Public Libraries, Museums

Banks, Post Offices

Restaurants Night Clubs

Cafeterias

Dept. Stores (upper floors)

Clothing Stores

Dept. Stores (main floors)

Supermarket, Retail stores

Sports Coliseums

Bowling Alley

Swimming pools

Factories, Supt. offices

Light Manufacturing

Heavy Manufacturing

Offices Conference Rooms

Offices Executive

Office Private

Office General

Office Computer

Hospital Rooms

Hospital Operating Rooms, Wards

Hospital Public Spaces

Apartment, Buildings, Hotel Rooms

Hotels, Ballrooms, Bank Halls

Hotel Public Spaces

Kitchens, Laundries, Garages

Recommended Noise Criteria

�������G��3�

�'�� D4�APPLICATIONAVERAGE(NC)

(NC)

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Ng

JW

Nj

Nj

NW

Sj

Nj

NW

NW

Sj

Wj

JJ

JJ

Jh

NJ

JW

NW

Sj

Sj

NW

Sj

Sj

SW

Sj

Sj

SW

SW

NW

Sj

Wj

SW

gj

gW

NW

NW

Sj

SW

25

30

22

22

27

32

25

35

40

40

35

40

40

45

40

40

45

45

35

40

50

45

60

65

30

35

35

40

50

30

35

40

35

35

40

45

Page 39: Square Ceiling Diffusers

���)��*� ���&74���^��Recommended delivery Velocities

����� ���&74���^��

���)��*

(m/s)

APPLICATION

Recommendeddelivery

Velocities(m/s)

Quantity Imperial Unit Metric UnitForm Imperial

To MetricMultiply By:

Form MetricTo ImperialMultiply By:

���. ��@���"$�Y���)Conversion Table

?bW���JbW

JbW���NbW

JbW���SbW

NbW���WbW

SbW���g

W���?j

1.5 - 2.5

2.5 - 3.5

2.5 - 4.5

3.5 - 5.5

4.5 - 6

5 - 10

=6�� ������3�

G"X��� �'� ������3�

H�R��� ��:F���8;�P&�� ��:F��

M��� ���k�������-�6��3�

��:F����8@3��� ���I�$ ��8-�<P�� ���-�*�8��-�V$���T

�)�P������-�3���V4��8'�1*��$�9��8�$r$

��*� mp� ��&F���8��53��8��- ��3���8y�D���$�9�

��V^� ��&F����

���-�*���I�8�$�4����� ��I�$ �8����� �

����O+��9��

��x ����8���������8�#��3��;�C-�*���

���9��$�9���

Broadcasting studios, Sound and

recording studios.

Concert halls, Auditoriums, Library,

Classrooms

Large offices, Restaurants, Hotels

Dining rooms, Public buildings

Corridors, Computer-rooms, Cafeterias

Department stores

Average factories, Workshops, Garages

Warehouses

Apartments, Residences, Hotel rooms

Theatres, Private offices, Hospitals, Mosques

square foot

square inch

square metre

square milimetre

0.0929

645.16

10.764

0.00155

(m )

(mm )

2

2

3

3

Area

Density

Length

Pressure

Temperature

Velocity

Volume

(flow)

inch

foot

foot

yard

milimetre

milimetre

metre

metre

25.4

304.8

0.3048

0.9144

0.0394

0.00328

3.2808

1.0938

(mm)

(mm)

(m)

(m)

inch of water column

foot of water column

inch of mercury column

ounces per square inch

pounds per square inch

Kilopascal

Kilopascal

Kilopascal

Kilopascal

Kilopascal

0.2486

2.9837

3.3741

0.4309

6.8948

4.0219

0.3252

0.2964

2.3206

0.145

(kPa)

(kPa)

(kPa)

(kPa)

(kPa)

fahrenheit celcius 5/9 ( F-32) (9/5 C)+32( C)

feet per second

feet per minute

miles per hour

metres per second

metres per second

metres per second

0.3048

0.00508

0.44704

3.2808

196.85

2.2369

(m/s)

(m/s)

(m/s)

cubic feet per minute

cubic feet per minute

cubic feet per hour

galons per minute

galons per minute

liters per second

cubic metres per second

milliliters per second

liters per second

liters per second

0.4719

0.0004719

7.8658

0.6309

0.7577

2.119

2119.0

0.127133

15.850

13.198

(L/s)

(m /s)

(ml/s)

(L/s)

(L/s)

(cfm)

(cfm)

(cfh)

(U.S.)

(imperial)

(fps)

(fpm)

(mph)

pounds per cubic foot kilograms per cubic metre 16.018 0.0624(kg/m )

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Page 40: Square Ceiling Diffusers

z ���{��"P-

,�+�����������<"+�!�$� ����e�^��"P-

z]���

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�4P�

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,�+�����;�9��(P.���� ��� ����\����$��

;� �.��)���Kk3* ����^���8���$���Y�/����]����� ���

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z)��*�c#���|#� (A )

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�%) ���)��*���^�����A )��*���^������ �#�-V

������8��+������+� �4��R �- �"��&����O3���G��$�>��+

,��4���� �I����3�

�"��Q� CFM 3P���� �4��R �- ���Q-��� �4��R �- ��#�-

,���V-�d67�� ��U4I����+

k

k

k kCFM=A x V

The area of grille utilized by the air stream at

the point of the outlet velocity, V (See

outlet velocity) as measured with an

appropriate meter.CFM=A x V

The point of measurement and type of

meter must be defined to accurately

determine CFM.

k

k

k k

Outlet Area (A ):

TERMINOLOGY

Aspect Ratio:

The ratio of width to height of the grille core.

Drop:

The vertical distance in feet between the

lower edge of a grille and the lower edge of

the air stream at the end of its throw.Drop is

affected by the lenght of throw, the velocity

and the temperature differential between the

supply and room air.

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z��}��c#���|#� (A )

���"^���)������ ��������H��d�F�*�|#��:���3<���

� ���I�����3� ��������������4P��U���/�R � ���� ������\

,��4��

�^����� ���9�����^����~� �.��"���Q����)�|#��:��

,��+�����3� �������R � �����"^

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�)��*�c#���|#��Y���%�����3+ ��O3P�� �#�-

,��

EE

The smallest net area of a grille utilized by

the air stream in passing through the grille

passages.It determines the maximum or jet velocity of

the air in the grille. In many grilles, theA occurs at the velocity measuring point

and is equal to the outlet area,A

Effective area (A ):

A

A

E

E

K

K

Page 41: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHINi

z�H4$�3� ���79 ( )P

d�67��EC.�H�� �������LT�f&� �(P.������"~����79

����5�������'���16����+��. �/�BR �F�������� ����� ��

,�� ����)�������

S

z�3^�����79 (P )

EC.�H��� ������LT�f&� �(P.�����3^���Y��%����79

,�� ����)��������H� ����d67�����5����

v

The compressive pressure in inches of H O

that exists in the grille collar area at a given

air volume with or without specific

designated accessories.

2

sStatic Pressure (P ):

The pressure in inches of H O equated to a

velocity that exists for a given air volume in

the grille collar area.

V

2

Velocity Pressure (P ):

The maximum total width in feet of the air

pattern at the point of terminal velocity.

Air Spread :

The distance in feet from a grille or

designated location to a point where the

motion of the air stream is reduced to a

given terminal velocity (V )T

Throw (T) :

The measured velocity at a stated point with

a specified meter. The rated outlet velocity is

typically an average of several prescribed

velocity measurements.CFM =A x V (see outletArea)

K

k k

Outlet Velocity (V ):

z ���=6�

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,�+������+� �4��R �- ����-��^�����

z����$�� (T)

(�P.�����#�-�H���R ��5%��@Q��������������H���5�'�9

�^����������4����$� ��� ����\����.��� �+����;�9

,�&��� �4��=��� 167����-(V )T

z�)��*��^�� (V )

H��G���$ �#�-��H��������+� �4��R ��- ��^��:4%�

,�+����q�16� ��O�3��

� ��%$�G����3���8Y� ��3��;��1����)���*��^���v���-

,�+������+� �4��R� �- �:4%� �^��

>��+��%) ���)��*�c#���|#����Ak k

k

CFM = A x V

z�@���79 (P )

�� �3^��������7�9�� H�4$�3� ���79�!�VC�(P ) (P )

,�� ����)�������������5�����d67�� ���EC.�H�� ��

T

SVThe sum of the static pressure (P ) and the

velocity pressure (P ) that exists in the grille

collar for a given air volume.

T

S

V

Total Pressure (P ):

Page 42: Square Ceiling Diffusers

������ ����� �����SHAHROKHI MANUFACTURING CO.SHAHROKHI Sj

z �'�;��I�|#� (L )

z �'���79�|#� (L )

z��+�Y�o+ ���R

G� ��+�H���Q$��������H��G��$���+��4F��$�@�� �'

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,�-�+� �4��R �-

���3� � ����-���w-����9�=���������������Y��.�����q��*

,�+����n�$ �q�16��H43���T���+�Lm)������� �#� ��

,�+���; ��?j������?j���:4��3P����v�-� �&"�

����Q������� ���+�����$� �[9�H��R �85* ��3.�P�

\����;�9�g��$�n��$ � ���� ����B�V$���&� �g�!�$� �R ��T

,�+���:4�R�|#�

W

P

W

P

The total sound created by a grille under a

specific condition of opreation not including

specific room acoustic absorption value

reductions per frequency octave bounds.

The basis of rating must be stated re

10 watts, or 10 watts.

The sound pressure measured in the test

room or occupied room with a sound level

meter referenced to 0.0002 microbar.Sound pressure may be measured in octove

bands with an octave band analyzer or total

sound pressure in all octave bands can be

measured.

That interior area of a conditioned space

which extends to within 6 inches of all room

walls and to a height of 6 feet above the

floor.

Sound Power Level (L ):

Sound Pressure Level (L ):

Occupied zone:

-12 -13

u?Ju?N

A grille sound rating in pressure level at a

given condition of operation , based on

established criteria and a specific room

acoustic absorption value. Catalog NC

ratings are based on sound power level (LW)

minus an 18db room attenuation all octave

bands.

Noise Criteria (NC) : z� �'�� D4� (NC)

���G� �+�H���Q$���79�|#��(P.���������� �'�v�-

� ������ � �� ���I�� D��4���������+����167������Y��.

,�� �O3P��n�$ �q�16��H43��� Lm)

?Z� ��&� �'�;��I�|#����� �'�� D4��v�-�������(LW)

,�� ��O3P����3� � ���-���B�V$����n�$ ��� =����@����T

The velocity in f.p.m. of the air stream at the

end of the throw (T) from the grille or a

designated point.

TTerminal Velocity (V ): z����-��^�� (V )

H�����������R ����$����4P�� ��3- ���� ��� ����\���^��

,�+������4I�����;�9�(P.����167���#�-

T

Page 43: Square Ceiling Diffusers

AHMAD SHAHROKHI was born in 1932 and began working in Sholeh Khavar Company in 1950. At that time, Iranian Industry was very young and most of the industrial parts and equipment were imported from foreign countries and Sholeh Khavar Company, active in the field of installation industry, was of no exception to this rule, thus it imported the air adjustable grilles required for its projects from USA supplied by T&B American Company.In 1951, a cargo ordered by Sholeh Khavar was sent by T&B Company for the said Company transported by vessel. this vessel broke down in a fire accident while in its way and therefore caused the Company to encunter problems in meeting its obligations. Thereupon, Ahmad Shahrokhi , assisted by financial support of the Company`s authorities, began sampling and manufacturing grilles from foreign models and was able to put into operation the production line of air adjustable grilles within a period of six months.Since then, being half a century, this Company has improved its quality and quantity day by and is proud to announce that on its 50 anniversary of its establishment, has proceeded in publishing the most comprehensive technical catalogue of its various products together with a CD of the computations.

Page 44: Square Ceiling Diffusers