"All-galvanized construction fan resists corrosion in high-humidity areas. Galvanized welded wire guard on intake and exhaust. Comes assembled and ready to install with prepunched holes for hanging. Truck ship. 3-year limited warranty. U.S.A. Amps 5.1, Needs to be Hardwired No, Fan Diameter in. 48, Air Delivery CFM 19,900, HP 1/2, Volts 230, Speed RPM 852, Speeds qty. 1. Bolt-together design for easy part replacement Truck ship 3-year limited warranty U.S.A. Model PFG-4815D"