Application

The FD-350 fire damper employs airfoil blades for point-of-origin control of fire in static and dynamic HVAC systems. The FD-350 is qualified to 4,000 ft/min (20.3 m/s) and 6 in.wg. (1.5 kPa) and may be installed horizontally in floors or assemblies with fire resistance ratings up to 4 hours. It is qualified to 2,000 ft/min (10.2 m/s) for multiple sections and 4 in. wg. (1.0 kPa) below 8" in height.

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