NAUTILUS 70 CFM Deluxe Bathroom Fan. This ceiling or wall-mounted fan features a 9-1/2"x9" white polymeric grille and a lifetime lubricated plug-in motor. It installs in a 3" round duct and is UL listed for use over tub/shower enclosures with a GFCI protected branch circuit. Suitable for bathrooms up to 65 sq. ft., this HVI certified and UL listed fan offers quiet operation and energy efficiency. Backed by a limited 1-year warranty.