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Ceiling Dampers
Nailor Ceiling Radiation Dampers have been tested to UL 555C for use with air outlets in lay-in ceiling applications and UL 263 for Wood Truss ceiling assembly applications.
Nailor 0714 and 0716 Ceiling Dampers are for use in square or rectangular applications, in lieu of hinged door type dampers in any UL/ULC floor/ceiling or roof/ceiling assembly with up to a 3 hour fire resistance rating where air ducts are allowed. Adjustable model 0716A for volume control available.
Nailor 0716-4 and 0720 is ideal for installation in tight places that require a fire and heat barrier in air duct openings penetrating fire resistive membrane ceilings. Adjustable model 0716-4A for volume control available.
Nailor Model 0722 Ceiling Dampers are for use in round applications, in lieu of hinged door type dampers in any UL/ULC floor/ceiling or roof/ceiling assembly with up to a 3 hour fire resistance rating where air ducts are allowed. Exteneded collar models 0722-SE and 0722-LE available. Adjustable models 0722A, 0722A-SE, and 0722A-LE available.
Models 0725 and 0726 Thermal Blankets are designed to insulate the exposed back pan area of a steel ceiling diffuser that may be used in UL Classified floor/ceiling or roof/ceiling assemblies with up to a 3 hour rating.
Models 0755, 0756(D), 0757(D), 0757-CB, 0757-DB, 0757-EB, 0763-FB and 0763-GB Ceiling Radiation Dampers are designed and tested for simple installation in specific UL floor-ceiling and roof-ceiling wood truss assemblies.