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Feature

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 and rubber gasket to help keep ducting securely in place
They prevent back draft air when your fans are off

Description

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.