The DFD-LP dynamic fire damper is a low-profile integral frame-sleeve high-performance model. The 1.5-hour-rated single aerodynamic blade dynamic (fan on) or static (fan off) fire damper also features the industry’s easiest resettable fuse link, which helps in testing to meet NFPA requirements. Features galvanized steel construction and is rated for 4,000 feet per minute and a standard static pressure of 4” w.g. on all sizes.
Also rated for dual-direction air flow and can be installed vertically in walls or horizontally in masonry floors. UL555 rated and meets NFPA and ICC International Building Code requirements.