Number of Results: 55
The CRD-501 is a round UL555C classified damper with UL555S leakage class I rating.
The CRD-60 is a curtain-style UL 555C classified damper designed to limit the radiant heat transfer through an opening in the ceiling membrane of a fire-resistance rated floor/ceiling assembly of three hours or less.
The CRD-2 is a round ETL listed damper designed to limit radiant heat transfer through an opening in the ceiling membrane of a fire-resistance rated floor/ceiling assembly of three hours or less.
The CRD-60X is a UL 555C classified damper with an attached insulation skirt designed to limit the radiant heat transfer through an opening in the ceiling membrane of a fire-resistance rated floor/ceiling assembly of three hours or less.
The CRD-2WT is a UL 555C classified damper for installation in wood truss construction with ratings up to one hour. These assemblies have proprietary design numbers listed in the UL Fire Resistance Directory.