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Ducts, Dampers, Adapters & Caps

Broan-NuTone® Radiation Damper

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
  • 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 AE80K, AE80LK, AE110K, AE110LK, AER110KC, A110-B, A80-B, A80HD-B, AE110-B, AE110L-C, AE50-B, AE80B-B, AE80BL-D, AE80S-B, AE80SL-C, AE110S-B, AE110SL-C, A110F1, A80F1, AE100BF1, AE110F1, AE50F1, AE80BF1, AE80BLF1, AE50110DC, AE50110DCL, AE50110DCS, AE50110DCSL, AE50110DCF, AE50110DCLF, A000HFNF, A000HFKT, A000HSNF, A000HSKT, A000HLNF, A000HLKT NuTone AERN80KC, AERN110K, AERN50110DCKC, AEN110-B, AEN110L-C, AEN50-B, AEN80B-B, AEN80BL-D, AN110-B, AN80C-B, AEN110F1, AEN80BF1, AN000HFNF, AN000HFKT, AN000HSNF, AN000HSKT, AN000HLNF, AN000HLKT
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