Dynamic (Fans On) Fire dampers are UL555 tested and labeled devices installed in ducts and air transfer openings or air distribution systems, designed to close upon the detection of heat.

FDD-110-3V

Multi-Blade Fire Damper - 1-1/2 & 3 Hour - Dynamic - 3V Blade - Optional Sleeve - Out of Wall or Round Option

Product Overview

UL Classified for installation in walls, floors, and partitions with a fire rating of less than 3 hours. This damper may be installed horizontally or vertically in dynamic systems that continue to operate in the event of fire. (Optional 3 hr. rating)

Product Information