UL and Warnock-Hersey (UL/WH), cUL/US Listed, NFPA Certified, Exceed national fire protection agency NFPA-90A

• Folded ceramic curtain-style damper to meet both combustible and non-combustible UL assemblies Allows for two-stage construction fan housing and damper sleeve during framing, fan/motor/damper installation after finishes Easy access to fan/motor/damper for maintenance UL555C, no longer automatically certifies both combustible (wood joist/wood truss) and non-combustible (steel beams/girders/trusses) by meeting the 1 - 3 hr 555C rating UL and Warnock-Hersey (UL/WH) now require a separate fire chamber fire test to verify the efficacy of the ventilation fan/radiation damper in a wood truss assembly Flexdamper meets UL combustible assembly ratings for 'stick-built' low or mid-rise multi-family or hotel/lodging projects, and offers the best option for architect/engineer projects due to the flexibility to be able to use any 10-1/4 in fan for fire-rated projects, it allows for two-stage project installation to protect fan/motor during drywall/interiors construction phase and allows easy access or replacement of the fan/motor Compatible with most Panasonic 10-1/4 in 50 - 150 cu-ft/min fans, fan/lights and fans with motion sensor Galvanized steel frame with 165 deg F fusible link High temperature, non-asbestos, reinforced fiber thermal fabric damper 5 years warranty Allows for easy installation of lights and motion sensors Flexdamper kit includes - radiation damper, galvanized steel frame, mounting screws for frame to fan housing, clip and grommets to secure wire/pigtail, plaster guard, installation guide, warranty information Fan models approved for WhisperGreen select (excluding generation 4 model), WhisperCeiling DC, WhisperCeiling 50 - 150 cu-ft/min (excluding generation 4 model), WhisperLite, WhisperSense DC, WhisperSense, WhisperSense Lite, WhisperFit EZ, WhisperValue DC, WhisperValue, WhisperValue Lite