Ceiling Radiation Dampers

All models have been tested and are labeled in accordance with UL 555C, for protection of ceiling openings in floor/ceiling assemblies with fire resistance ratings of 3 hours or less.

Ceiling Radiation Dampers

Overview

  • Model CRD

    Model CRD

    All models have been tested and are labeled in accordance with UL 555C, for protection of ceiling openings in floor/ceiling assemblies with fire resistance ratings of 3 hours or less.


  • Model CRD-1WJ

    Model CRD-1WJ

    The CRD-1WJ is a UL555C classified ceiling radiation damper for installation in wood joist ceiling construction and approved for use in 17 ceiling designs as detailed in the UL Fire Resistance Directory. The CRD-1WJ provides the ceiling radiation damper installed in an insulated steel enclosure with C, O or R inlet shapes to connect to ductwork. The damper is positioned in the enclosure to accommodate 1½ in. (38mm) grille depth.


  • Model CRD-1WT

    Model CRD-1WT

    The CRD-1WT is a UL classified ceiling radiation damper for installation in wood truss ceiling construction. This model is approved for ceiling designs M-508 and P-554 as detailed in the UL Fire Resistance Directory. The CRD-1WT provides the ceiling radiation damper with a flange attached around the perimeter of the damper. The damper is positioned either flush with the ceiling or above the ceiling for grille installation.


  • Model CRD-501

    Model CRD-501

    The CRD-501 is a round ceiling radiation damper with low leakage. This model is UL555C and UL555S classified. The CRD-501 has been qualified to 3000 fpm (15 m/s) and 4 in. wg (1 kPa) for operational closure in emergency smoke control situations for use in HVAC system.


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