Product Description
Broan 110RDF 110 CFM 4.0 Sones Fire Rated Pack with Motor Assembly and: Home Improvement. Being fire-rated means the ability of a wall, floor ceiling, or roof ceiling to withstand the effects of fire for a specified period of time. Many local codes require that exhaust fans installed in fire-rated ceilings must be protected by dampers, which, in case of fire, protect against the spread of heat and flame. Broan ceiling radiation dampers are designed to protect the openings in 1-, 2-, or 3-hour fire-rated floor-ceiling and roof-ceiling designs.
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