Model FD-140 1-½ hour - fire damper triple-V blade


The FD-140 fire damper employs triple-V blades for point-of-origin control of fire in static and dynamic HVAC systems. The FD-140 is qualified to 4,000 ft/min (20.3 m/s) and 6 in.wg. (1.5 kPa) and may be installed in vertical walls or partitions, or horizontally in floors or assemblies with fire resistance ratings up to 2 hours. It is qualified up to 2,000 ft/min (10.2 m/s) for multiple sections.