Return Grilles 25-H – External Grilles or Return Air

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  • Return Grilles 25-H – External Grilles or Return Air
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Description

​Features and Benefits of Return Grilles 25-H

 

 

 

  • Return grille
  • Louvres for exterior air intake or exhaust
  • Horizontal blades
  • Fixed at 45o
  • Finished in anodised aluminium
  • Can be finished in any RAL colour upon request
  • Can incorporate volume control damper (-O)
  • Can incorporate anti-insect mesh (-MI)

 

 
 
 
 
 
 
 
 

Return Grilles 25-H Selection Table

Return Grilles 25-H Dimensions
 

Dimension

Q(m3/h)

LwA[dB(A)]

Pt(PA)

Vk(m/s)

200 x 100

 

42

58

82

24

32

40

8

14

29

2.2

3.0

4.2

250 x 100

 

52

70

100

24

32

40

7

13

27

2.1

2.9

4.1

300 x 100

200 x 150

60

84

115

24

32

40

7

13

25

2.1

2.9

3.9

400 x 100

200 x 200

77

107

148

24

32

40

6

12

23

2.0

2.8

3.8

500 x 100

250 x 200

94

130

175

24

32

40

6

12

21

1.9

2.7

3.6

600 x 100

400 x 150

300 x 200

140

190

260

24

32

40

5

10

18

1.8

2.4

3.3

500 x 150

400 x 200

300 x 250

170

230

320

24

32

40

5

9

18

1.7

2.4

3.3

600 x 150

450 x 200

200

270

370

24

32

40

5

9

16

1.7

2.3

3.2

600 x 200

400 x 300

275

380

520

24

32

40

4

8

15

1.6

2.2

3.0

800 x 200

400 x 400

 

360

495

685

24

32

40

4

7

14

1.6

2.1

3.0

1000 x 300

750 x 400

 

680

930

1290

24

32

40

3

6

11

1.4

1.9

2.6

900 x 400

600 x 600

 

850

1160

1650

24

32

40

3

5

11

1.3

1.8

2.5

1000 x 600

1340

1840

2540

24

32

40

2

5

9

1.2

1.7

2.4

The Selection Table shows a summary of dimensions. Other sizes available. Consult our sales department.

 

Legend

 

Q(m3/h): Air Flow

 

LwA[dB(A)]: Sound Power Level

 

Pt(PA): Total Pressure Loss

 

 

 

Vk(m/s): Effective Velocity​

There are no softwares available for download for this particular product.

​Other models

 

 

25-H-SB

 

 

  • Dimensions 595x295 - 595x595
  • For modular false ceilings

 

 

Mounting Return Grilles 25-H

 

With pressure clips - Mounting frame needed (-MM).

 

With screws - Without indication, the grille is provided with holes for screwing the mounting frame.

 

With plenum box made of galvanised steel sheet, side or top entry connection (-PE21/20).