Premium radiation damper for use with NuTone ventilation fans (sold separately).For use in 1, 2 and 3 hour rated floor-ceiling and roof-ceiling constructions Galvanized steel frame High temperature, non-asbestos, reinforced fiber thermal fabric Stainless steel closure springs 165°F fusible link Separate outer frame allows complete fan and damper servicability without disturbing the surrounding ceiling material Meets or exceeds NFPA-90AHeight: 2-7 8 Length: 10-3 4 Width: 1-5 8
