This iLIVING 14" gable ventilator exhaust fan is designed to move large volumes of air; ideal for home, factories, warehouses, attics, greenhouse, barn and auto shops. The fan speed is adjustable with Thermospeed Controller, Range from 600 CFM - 2339 CFM, allowing you to adjust the air circulation to your desired power, while still being cost and energy efficient, using only 230 Watts at maximum speed. Thermospeed Controller can be set to automatically regulate temperature. This fan has a 4-blade steel propeller. The fan housing is constructed of heavy-duty galvanized steel with powder-coated finish. Motor RPM: 1010, Operating Amps: 2.85A. Industrial Applications, Partially Assembled, Auto Thermal Protection, Shaded Pole Motor Type, 15"H x 15"W x 4"D, 6-ft. cord, NEMA plug 5-15P, 4 Steel Blades, Steel Housing, 4 Mounting Brackets, Standards: ETL/cETL Listed.