UL Classification (UL Standard 555C) Yes, for use 1, 2 or 3 hour fire-rated floor/ceiling and roof/ceiling designs 165° F Fusible LinkW Yes Approved For 60-110 CFM Fans - Pansonic Models: FV-05VQ2, FV-07VQ2, FV-08VQ2, FV-11VQ2 and FV-11VQD2 Thermal Fabric High Temperature, Non-Asbestos, Reinforced Fiber Galvanized Steel Frame Yes 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 Galvanized Steel for Long Life Yes Warnock Hersey Classifed Yes