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-SAHG

Curtain Fire Damper - 1-1/2 & 3 Hour - Horizontal Dynamic - Sleeved - Behind Grille

Product Overview

UL classified for installation in floors, and partitions with a fire rating of less than 3 hours. This damper may be installed vertically or horizontally in dynamic HVAC systems that continues to run in the event of fire. Also approved for static systems. (See optional 3 hr. rating)

Product Information