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 555C and National Fire Protection Association NFPA-90A.Approved For: WhisperGreen, WhisperGreen-Lite, WhisperCeiling, WhisperLite, WhisperSense, WhisperSense-Lite, WhisperWelcome, WhisperFit, WhisperValue Thermal Fabric : High Temperature, Non-Asbestos, Reinforced Fiber National Fire Protection Association (NFPA): Panasonic radiant dampers assembled together with Panasonic ventilation fans, meet or exceed NFPA-90A Installation: Will fit a wood frame ceiling or a T-bar ceiling UL Classification (UL Standard 555C): Yes, for use 1, 2 or 3 hour fire-rated floor ceiling and roof ceiling designs165° F Fusible LinkW: Yes Depth: 3-1 2 Galvanized Steel for Long Life: Yes Galvanized Steel Frame: Yes Height: 10-1 8 Warnock Hersey Classifed: Yes Width: 10-1 8
