UL Fire Rated Floor/Ceiling assemblies and Roof/Ceiling assemblies require specially tested and classified ceiling dampers to provide fire and heat protection where HVAC components penetrates the ceiling membrane. Conventional fire dampers, which stop the spread of flame but Do Not stop heat, are unacceptable for protecting fire rated ceilings.
21/8 " Maximum X 22 gauge Galvanized steel channel.
22 gauge Galvanized steel in the air stream.
THERMAL INSULATION BLANKET
Mineral wool is standard.
Optional on damper with areas less than 80 square inches.
Damper with areas above than 80 square inches will be provided with blade insulation.
Galvanized Steel Spring.
Standard 165° F. (212°F maximum)
Stainless Steel Construction.
* Dampers furnished approximately 1/4" smaller than given duct dimension.
* Refer to the KBE Installation Instruction and supplements for complete installation details.