RDFU Premium Radiation Damper

The Broan-NuTone RDFU 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. Features: * 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 * Sensor and light cable extensions required on this model. Purchase Model RDJUMPU separately for fans with incandescent or fluorescent lights. Purchase Model RDJUMPU1 separately for fans with LED lights. * Meets or exceeds NFPA-90A * UL Classified (UL-555C) * Compatible with the following fan and fan/light models: QT130E, QT130LE*, QT140E, QT140LE*, QTXE150, QTXE150FLT*, RB80, RB110, RB80L*, RB80L1*, RB110L*, RB110L1*, XB50, XB80, XB110, XB50L*, XB80L*, XB110L*, XB110H*, XB110HL*, ZB80, ZB110, ZB80L*, ZB110L*, ZB110H*, ZB110HL*, ZB80M*, ZB110M*, ZB80ML*, ZB110ML*, XB50L1*, XB80L1*, XB110L1*, XB110HL1*, ZB80L1*, ZB80ML1*, ZB110L1*, ZB110HL1*, ZB110ML1* * Sensor and light cable extensions required on these models (Purchase Model RDJUMPU separately for fans with incandescent or fluorescent lights Purchase Model RDJUMPU1 separately for fans with LED lights)