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WH25

WH25B-100
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MISSING
Fire damper

Circular fire damper for air duct system that penetrate fire resistance walls or floors. With 25 mm thick closing blade made from refractory material. Casing leakage performance class C according to Standard EN1751:2014 section C.3.

Total pressure loss
Δpt
Pa
Sound power level
LwA
dB(A)
Velocity
v
m/s
  • Pressure and sound power diagram
    MISSING
    Hz 63 125 250 500 1K 2K 4K 8K
    Lw 42 34 31 23 18 17 12 5
    Coct - - - - - - - -
    ΔL - - - - - - - -
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