Housings and finishes (motor assembly and grille) sold separately in units of four per carton - purchase housings for rough-in and blower assemblies/grilles later for finishing.,
UL classified (UL standard 555C) for use in 1-, 2-, or 3-hour fire-rated floor-ceiling and roof-ceiling designs.,
Warnock Hersey Listing allows use in combustible ceilings with ducted fans.,
High temperature, non-asbestos, reinforced fiber thermal fabric.,
Galvanized steel frame.