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3 Hour Label
Nailor D0500 Series 3 hour rated Dynamic Curtain Fire Dampers are UL approved for use where local building codes require the protection of HVAC ductwork penetrations in walls, partitions or floors that have a fire resistance rating of up to 4 hours.
Nailor D0500 Series 3 hour rated Dynamic Curtain Fire Dampers feature a standard 4 1/4" frame and corrosion resistant steel frame and blades for lasting performance. Choice of transition styles, factory installed sleeves to suit duct size, and Quick-Set retaining angle options make installation fast and simple.