RETHINK PERFORMANCE. RETHINK RELIABILITY. For high performance in a narrower profile, RuskinĀ® DC-series dampers feature high-performance airfoil blades, a Class 1A leakage rating* and an all-new coupler option that joins two damper sections without a jackshaft. Learn more about DC-series dampers and other high-performance products at ruskin.com. *AMCA Class 1A leakage is defined as 3 cfm @ 1-in. wg. Visit ruskin.com for more information. YEAR LIMITED WARRANTYhttp://www.ruskin.com http://www.ruskin.com