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Ideal-Air Back Draft Damper 6 in

Retail price: $19.95  

$17.96

You save: $1.99 (10%)
736982
These are excellent quality back draft dampers. They are made from heavy-gauge galvanized steel with heavy duty springs. They use both an embossed bead & rubber gasket to help keep ducting securely in place. They prevent back draft air when your fans are off.