Features:

·   Ul listed and exceeds UL 555C for use in a 1, 2, or 3 hour fire-rated floor-ceiling and roof ceiling designs.

·   Warnock-Hersey classified for wood frame assemblies.

·   Fits Panasonic WhisperCeiling, WhisperGreen and WhisperFit models 50-150 CFM.

·   165 degree Fahrenheit fusible link.

·   High-temperature, non-asbestos, reinforced fiber thermal fabric.

·   Galvanized steel frame.