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PPENN-038X066
Pressure Relief, Backdraft Damper
by
38 in. Width x 66 in. Height, Aluminum Frame, Parallel Blade.
Features
Aluminum Construction Maintains A Good-Looking Appearance
Blades Overlap Frame, Providing Optimum Resistance To Weather
Non-Metallic Blade To Blade Seal Provides Quiet Operation During Highest Spot Velocities