In many a floor/ceiling and roof/ceiling assembly listed in UL’s Fire Resistance Directory, a ceiling membrane is required to thermally protect the structural members of the assembly in the event of a ...
Ceiling dampers prevent radiant heat transfer between the occupied spaces and entrances into supply and return ducts, ceiling-floor voids, or ceiling-roof voids. While smoke and flames may be ...
Bathroom exhaust fans are the most common way to properly ventilate and control moisture in residential bathrooms. Along with providing effective ventilation, bath fans with a ceiling radiation damper ...
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