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Motorized dampers from Grainger feature stainless steel jamb seals to help keep out light, air and moisture. Center pivoting louvers can provide a full 90 Degrees opening and include welded corner construction and factory installed motors. Choose from mill finish extruded aluminum frames and G-90 galvanized steel dampers. Volume control channel style dampers can regulate airflow in medium- and low-pressure commercial applications. Choose from single-panel spring return and double-panel spring return styles when you shop for motorized dampers at Grainger.