LTAT 1

Telescopic counterflange
LTA   l/s  
Size 10 Pa 15 Pa 20 Pa
200-100 14 19 21
400-100 30 35 42
600-100 46 55 65
400-150 52 62 72
600-150 70 83 100
800-150 110 130 150
400-200 70 83 100
600-200 110 130 150
800-200 142 180 200

The data applies to a grille placed in a wall.

*) Lp10A = Sound pressure incl. A-filter with 4 dB room attenuation and 10 m2 room absorption area.

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