Overview
The Butterfly & Curtain type of ceiling radiation dampers are UL555C tested and listed to protect penetrations made in the ceiling membrane of a fire rated floor/ceiling or roof/ceiling. These ceiling radiation dampers are intended to stop the passage of HEAT, not flame in such HVAC penetrations as diffusers, return air openings and grilles. Fire dampers are not sufficient for use in ceilings and are not an interchangeable product.
Product Features
- UL listed and tested to UL 555 Standard for Fire Dampers
- California State Fire Marshall (CSFM) listed
- New York MEA listed
- Dynamic rated (for HVAC systems that keep fans on during a fire)
