USI Bathroom 50 CFM 4 in. Vent Ventilation Fan
Model BF-504. Bath Fan. 50 CFM Performance. 3.5 Sones. 4 in. Duct Adaptor with Built-In Damper. Exhaust Capacity up to 60 sq. ft. 100 Watt Lamp Maximum (not included) (Model BF-504L). Polycarbonate Light Lens (Model BF-504L). Galvanized Housing Resists Humid Conditions and Changing Attic Temperatures. Housing has Ceiling/Wall Thickness Indicator Markings and Built-In Mounting Tabs for Quick and Easy Installation. Permanently Lubricated Plug-In Motor for Quick Activation. Precision Balanced Blade. Decorative Molded Grille. Independently Tested for CFM and Noise Levels.
Diameter (in): 8.625
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