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- The Broan-NuTone® RDM2 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.
- Meets or exceeds NFPA-90A.
- UL Classified (UL-555C).
- Includes light jumper cable
- FinishGalvanizedMaterialSteelTypeRadiation DamperDimensions10-1/8 in D x 9-3/8 in W x 2-3/4 in HManufacturerBroan-NuToneManufacturer #RDM2Mounting TypeCeilingShapeRectangleSpring MaterialStainless SteelSuitable For Use WithFans and ENERGY STAR qualified fan/lights