On-Line Catalog : Fire-Smoke Dampers > 1-1/2 Hour Rated > Airfoil Blade > FSD-151
Model FSD-151 1-½ hour • UL class 1 — combination fire smoke damper
The FSD-151 combination fire smoke damper employs airfoil blades for point-of-origin control of fire and smoke in static and dynamic smoke management systems. The FSD-151 is qualified to 4,000 ft/min (15.3 m/s) and 4 in.wg. (1.0 kPa) and may be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 2 hours.