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About Atmosphere - Backdraft Damper
Atmosphere&Rsquo;S All New Galvanized Steel Back Draft Dampers Fit Directly Into The Duct Simplifying Installation. They Feature A Shaft For Each Of The 2 Flaps So To Prevent Jamming. Also, The Flaps Close Onto A Perimeter Gasket Ensuring The Best Air Seal And Quiet Operation.
