50CFM Econ Bathroom Fan

NAUTILUS Broan Economy Bathroom Fan. It is a 50 CFM economy bath fan with 4.0 sones, 9-1/4"x9" spring mounted polymeric grille, ceiling or wall mounted, lifetime lubricated plug in motor, installs in 3" round duct, UL listed for use over tub/shower enclosures with GFCI protected branch circuit, 3-5/8"Hx7-1/2"Wx7-1/4"D high galvanized steel housing, for bathrooms up to 45 sq.ft. It has a 1-year limited warranty.