The CRD-1 is a UL555C 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

Model CSP inline fans are high performance fans designed for exhaust, supply or return air applications where low sound level are required. Units feature an insulated, galvanized steel housing with a forward-curved wheel.

• 16.875 x 13.25 inch inlet width x height
• 10 x 8 inch outlet width x height
• Speed controllable, with up to 30% turndown

The CRD-1 is a UL555C 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