Spring loaded backdraft damper
 Neoprene damper seal minimizes leakage
 Requires from 0.04 to 0.08 inches wg pressure to open
 Simple installation in any position - entire assembly inserts into duct
 Gauge: 20
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Spring loaded backdraft damper
 Neoprene damper seal minimizes leakage
 Requires from 0.04 to 0.08 inches wg pressure to open
 Simple installation in any position - entire assembly inserts into duct
 Gauge: 20