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.
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