The Insulated Control Damper is designed for outdoor-air intake systems. The damper frame is insulated on all four sides with polystyrene. The blades are thermally broken and filled with polyurethane for insulating characteristics. According to the company, the Model ICD provides greater value in a building by reducing the transfer of heat or cold and virtually eliminating condensation.

Greenheck, P.O. Box 410, Schofield, WI 54476-0410; (715) 359-6171; fax (715) 355-2399; www.greenheck.com.