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FIRE AND SMOKE DAMPERS

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FIREDAMPER22

FIREDAMPER22

Mechanical
Joined
Sep 1, 2004
Messages
3
Location
US
Does anyone know if a class 0 leakage fire and smoke damper exists ? I only know of class 1 thru 3 leakage ratings for fire and smoke dampers.
 
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Never run into a class 0 damper. However, most fire dampers require class 0 or class 1 duct fittings. I wonder if somebody got confused while writing a apec?

 
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