50 CFM Bathroom Exhaust Fan Light in White Polycarbonate Heat-Resistant Lens with U.V. Inhibitors Easy Removal and Installation of Motor Assembly Key-Hole Mounting Permanently Lubricated Motor Precision-Balanced Impeller for Quiet Operation Galvanized for Humid Conditions and Various Attic Temperatures Gauge Markings for Ceiling Thickness Built-In Junction Box for Easy Wiring Includes 4`` Duct Adapter