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Ducts, Dampers, Adapters & Caps
Premium Radiation Damper for Ventilation Fans
The Broan-NuTone® RDF1 Radiation Damper prevents the rapid spread of fire to other areas of a home during a fire. Many codes require that exhaust fans installed in multi-family homes, with fire-rated ceilings, must be protected by radiation dampers. When the air temperature passing through the damper exceeds 165°F, the fusible link melts, triggering the thermal fabric to automatically close across the damper. Airflow is interrupted by a flame and heat barrier, preventing the rapid spread of fire to other areas of the home.
- 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 serviceability without disturbing the surrounding ceiling material
- For use with fans and ENERGY STAR qualified fan/lights
- Includes light jumper cable
- Meets or exceeds NFPA-90A
- UL Classified (UL-555C)
- Compatible with the following fan and fan/light models: BROAN LP80, LP110, RB80, RB110, XB50, XB80, XB110, ZB80, ZB110