Double deflection grille for rectangular duct mounting with adjustable blades made of galvanized steel
Brand
Cairox
Application
For air supply and exhaust in ventilation and air conditioning systems.
Material
Galvanized steel
Colour
Galvanized steel
Other colours available upon request
Composition
Double row of deflection blades, vertical in front and horizontal in back
Mounting
Visible screw mounting on rectangular duct
Accessories
Volume control damper DWN
Text for tender
The grilles for air supply or exhaust have individually adjustable blades to regulate the direction of the air flow pattern. They are made of galvanized steel natural finish with a double deflection and are supplied with a volume control damper.
Cairox Type SDN-VH GALVA+DWN
The grilles for air supply or exhaust have individually adjustable blades to regulate the direction of the air flow pattern. They are made of galvanized steel natural finish with a double deflection and are supplied with a volume control damper.
Cairox Type SDN-VH GALVA+DWN
Order example
SDN-VH GALVA, 400, 100 + DWN
Explanation
SDN-VH GALVA = Grille type
400 = Length
100 = Height
Accessories (Optional)
DWN = Volume damper
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Quick selection
SDN-VH
LxH
200x100
300x100
400x100
300x150
500x100
400x150
600x100
500x150
800x100
400x200
600x150
1000x100
500x200
800x150
600x200
1000x150
800x200
1000x200
Q
Ak
0.0088
0.0144
0.02
0.0228
0.0256
0.0311
0.0395
0.0423
0.0479
0.0534
0.0646
0.0813
0.1092
100
Vk
3.2
1.9
1.4
1.2
1.1
X0,25
3.1
2.4
2.1
1.9
1.8
Ps
4.3
1.6
0.8
0.6
0.5
Lw(A)
<20
<20
<20
<20
<20
150
Vk
4.7
2.9
2.1
1.8
1.6
1.3
1.1
X0,25
4.7
3.7
3.1
2.9
2.7
2.5
2.2
Ps
9.8
3.6
1.9
1.5
1.2
0.8
0.5
Lw(A)
31
<20
<20
<20
<20
<20
<20
200
Vk
6.3
3.9
2.8
2.4
2.2
1.8
1.4
1.3
1.2
1
X0,25
6.2
4.9
4.1
3.9
3.7
3.3
2.9
2.8
2.7
2.5
Ps
17.4
6.5
3.4
2.6
2.1
1.4
0.9
0.8
0.6
0.5
Lw(A)
38
27
20
<20
<20
<20
<20
<20
<20
<20
300
Vk
5.8
4.2
3.7
3.3
2.7
2.1
2
1.7
1.6
1.3
1
X0,25
7.3
6.2
5.8
5.5
5
4.4
4.3
4
3.8
3.5
3.1
Ps
14.6
7.6
5.8
4.6
3.1
1.9
1.7
1.3
1.1
0.7
0.5
Lw(A)
38
31
28
26
21
<20
<20
<20
<20
<20
<20
400
Vk
7.7
5.6
4.9
4.3
3.6
2.8
2.6
2.3
2.1
1.7
1.4
1
X0,25
9.7
8.3
7.7
7.3
6.6
5.9
5.7
5.3
5.1
4.6
4.1
3.5
Ps
26.1
13.5
10.4
8.2
5.6
3.5
3
2.4
1.9
1.3
0.8
0.5
Lw(A)
46
39
36
33
29
24
22
<20
<20
<20
<20
<20
600
Vk
7.3
6.5
5.4
4.2
3.9
3.5
3.1
2.6
2.1
1.5
X0,25
11.6
11
10
8.8
8.5
8
7.6
6.9
6.2
5.3
Ps
23.4
18.6
12.6
7.8
6.8
5.3
4.3
2.9
1.8
1
Lw(A)
47
44
40
35
33
31
28
24
<20
<20
800
Vk
7.1
5.6
5.3
4.6
4.2
3.4
2.7
2
X0,25
13.3
11.8
11.4
10.7
10.1
9.2
8.2
7.1
Ps
22.4
13.9
12.1
9.5
7.6
5.2
3.3
1.8
Lw(A)
48
43
41
38
36
32
27
20
1000
Vk
7
6.6
5.8
5.2
4.3
3.4
2.5
X0,25
14.7
14.2
13.4
12.7
11.5
10.3
8.8
Ps
21.8
19
14.8
11.9
8.1
5.1
2.8
Lw(A)
49
47
44
42
38
33
26
1200
Vk
7.9
7
6.2
5.2
4.1
3.1
X0,25
17.1
16
15.2
13.8
12.3
10.6
Ps
27.4
21.3
17.2
11.7
7.4
4.1
Lw(A)
52
49
47
43
38
31
1600
Vk
6.9
5.5
4.1
X0,25
18.4
16.4
14.2
Ps
20.9
13.2
7.3
Lw(A)
50
45
39
2000
Vk
6.8
5.1
X0,25
20.5
17.7
Ps
20.6
11.4
Lw(A)
51
45
2400
Vk
6.1
X0,25
21.2
Ps
16.5
Lw(A)
50
Symbols and specifications
LxH = Width L and height H in mm
Q = Air volume in m³/h
Ak = Effective surface (free area) in m²
Vk = Average effective velocity through the grill in m/s
X0.25 = Horizontal throw in m at an endvelocity Vt of 0.25 m/s
Ps = Static pressure loss given in Pa
Lw(A) = Acoustic power in dB(A)
The throw X0.25 is given without deflection of the airstream at an end velocity of 0.25m/s. The distances are given for a smooth ceiling and installation distance of the center of the grille at 300mm from the ceiling surface. When mounted at a distance of 400 to 600 mm from the ceiling, a horizontal deflection towards the ceiling of 15° is advised. When mounted at a distance larger than 600mm from the ceiling, the throw distance X0.25 will be smaller than mentioned due to the missing coanda effect. In these cases and for all other special requirements, please contact our engineering office.
The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by dividing the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
Advised mounting distance between centers of multiple grilles in the same wall should be greater than 1/3 of the throw length X0.25 (without spread).
The pressure losses Ps are given for grilles without damper of with fully opened damper.
The acoustic powers Lw(A) are given for grilles without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.