VD-1640 stainless steel damper

The vd-1640 steel control damper offers sturdy construction using 16-gauge frames. Combinations include the galvanized triple-vee blade with galvanized frame, galvanized airfoil blade with galvanized frame, and stainless steel triple-vee blade with stainless steel frame. The damper is tested in accordance with amca standard 500. It exhibits low leakage rates that meet frequently specified 10 cfm/sq. Ft. At 4 inch w.g. Level.