Local fire codes may require a ventilation fan installed in a fire rated floor/ceiling or a roof/ceiling assembly to be equipped with a specially tested and classified radiation damper. In case of a fire, the radiation damper closes to prevent the spread of fire and heat. Panasonic radiation dampers are designed to protect ceiling penetrations in 1, 2 or 3 hour fire-rated floor/ceiling and roof/ceiling designs. All Panasonic radiation dampers meet or exceed the following: UL Classified: Panasonic radiation dampers, assembled together with Panasonic ventilation fans, meet or exceed UL 555C. Quantity and frequency of permissible ceiling penetrations are described in the UL fire resistance directory. National Fire Protection Association (NFPA): Panasonic radiation dampers assembled together with Panasonic ventilation fans, meet or exceed NFPA-90A.




Approved for the following fans:

FV-05VK3, FV-08VK3, FV-13VK3, FV-05VQ5, FV-08VQ5, FV-11VQ5, FV-15VQ5, FV-05VF2, FV-08VF2, FV-11VF2, FV-05VS1, FV-08VS1, and FV-10VS1.