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FIRE AND SMOKE DAMPERS

FIRE AND SMOKE DAMPERS

FIRE AND SMOKE DAMPERS

(OP)
  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.

RE: FIRE AND SMOKE DAMPERS

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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