On-Line Catalog : UL Rated Fire, Smoke and Ceiling Radiation Dampers > Fire Dampers > Dynamic 1-1/2 Hr Rated > 3V Blade > FD-140-OP
Model FD-140-OP 1-½ hour - fire damper out of partition
Application
The FD-140-OP fire damper employs triple-V blades for point-of-origin control of fire in static and dynamic HVAC systems. These specialty dampers are approved for installation with the closed plane of the blades up to 14-1/2" (368) outside the fire rated partition and allow for direct access from the face of the damper through the HVAC grille. The FD-140-OP is qualified to 4,000 ft/min (20.3 m/s) and 6 in.wg. (1.5 kPa).
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