Galvanized Steel Diffusion Outlet

A×B (Neck size)

E×F(Air outlet)

C×D(Surface size）

150×150

405×405

595×595 or 603×603 Fitted with light steel frame ceiling specifications

200×200

250×250

300×300

Neck size mm

(Area m²)

Wind speed

M/S

2

2.5

3

3.5

4

4.5

5

150×150

(0.0225)

Air volume

162

203

243

284

324

365

405

Total pressure loss

1.1

1.2

1.4

1.8

2.5

3.0

4.0

Arrival distance

1.7-2.5

2-2.9

2.4-3.2

2.5-3.5

2.6-3.9

2.6-3.9

3.0-4.2

NC

-

21

24

27

31

34

37

200×200

(0.04)

Air volume

288

360

432

504

576

648

720

Total pressure loss

1.3

1.4

1.9

2.6

3.2

4.2

5.1

Arrival distance

2.3-3.2

2.5-4

3-4.3

3.2-4.6

3.4-5.1

3.6-5.3

3.8-5.5

NC

21

22

25

30

33

37

40

250×250

(0.0625)

Air volume

450

563

675

788

900

1013

1125

Total pressure loss

1.4

2.0

3.0

4.0

5.1

6.5

8.0

Arrival distance

3.1-4.2

3.5-5

3.9-5.4

4.2-5.7

4.3-6.2

4.8-6.7

5-7

NC

22

23

27

32

34

37

41

300×300

(0.09)

Air volume

648

810

972

1134

1296

1458

1620

Total pressure loss

2.0

3.1

4.2

6.0

7.4

9.4

10.7

Arrival distance

3.8-5.2

4.1-5.8

4.8-6.4

5-7.2

5.4-7.8

5.7-8.2

6-8.5

NC

23

24

29

33

36

39

44