PPENN-020X046
Pressure Relief, Backdraft Damper
by
20 in. Width x 46 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