FD35/OW UL Classified 1 1/2 hr. Dynamic, V Groove Blade, Out of Wall/Floor

UL 555 1.5 hr. Static, V-Groove Blade, Factory Sleeve

The FD35OW is a UL555 classified, 1-1/2 hour rated, multiblade fire damper designed for use in "out of wall or concrete floor" through penetration applications. The FD35OW features:

UL approval for dual directional air flow.
Galvanized steel construction.