7/31/2019 Grilles G20 - G
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comfort | grilles
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Special grille G
Description
Special grille type G is a range of aluminium grilles with
fixed
slanting horizontal bars for air exhaust. The grille can be
configured on the basis of the summary. As part of the con-
figuration you can select the type of mounting and accesso-
ries. Finally, A x B dimensions are specified. These have
certain limitations, which are shown under the order code.
MaintenanceDepending on the configuration, the grille can be
removed
to enable cleaning. The external parts should be wiped with
a damp cloth.
Mounting
0. Not prepared for installation
1. With screw holes
2. With springs only for installation in box
3. With springs and mounting frame
Accessories
0. Without accessories
2. With damper
Ordering exampleG a b ccc ddd
Type
Mounting
Accessories
A - measure
B - measure
A x B: Duct/cutout
A dimension: along the bars
B dimension: across the bars
Can be supplied in all dimensions.
Max. A x B = 2000 x 2000Min. A x B = 100 x 60
Free area F [m2]= (A-25) x (B-25) x 0.5 x 10-6
Mounting frame and volume regulator - see GGR/GAT.
B+25/A+25
B-25/A-25
BA
24
6
B-6/A-6
8
62
Materials and finishGrille and accessories: Aluminium
Mounting frame: Galvanised steel
Standard finish: Natural anodisedOn request: RAL 9010 Gloss
30
The grille is available in other colours. Please contact
Lindabs sales department for further information.
7/31/2019 Grilles G20 - G
3/3
comfort | grilles
We reserve the right to make changes without prior notice
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Ventilation grille/special grille G20/G
Technical data
CapacityVolume flow q [l/s] and [m3/h], total pressure drop pt
[Pa],
throw l0.2 and sound level LWA [dB(A)] can be seen in the
diagrams.
Frequency-related sound effect levelThe sound effect level in
the frequency band is defined as
LWA+Kok.KKok values are given in chart. See table below.
Volume regulatorCorrection of sound pressure pt [Pa] and sound
level LWA[dB(A)] using volume regulator. See table below.
Centre frequency Hz
63 125 250 500 1K 2K 4K 8K
Kok 4 -1 3 -1 -6 -14 -22 -22
Exhaust Open 45o Closed
Pressure [Pa] x1,3 x 3 x12
Sound power leveldB(A)
+3 +12 +32
20 30 40 50 60 100 150 200 300 500 700 1000 1500
qV [l/s]3
5
7
10
15
20
30
50
70p t [Pa]
100 150 200 300 400 700 1000 2000 3000 5000qV [m
3/h ]
0.01052 0.015 0.02 0.03 0.05 0.0791F [m
2]
G20
LWA dB(A)30
35
40
45
50
