Iliving ILG8G14-12T Newest Automatic Gable Mount Attic Ventilator Fan with Adjustable Thermostat, 3.10 Amp Automatic adjustable built-in thermostat 3.10 amps, 120 volts, 210 watts, 1/8 HP with 1050 rpm 1220 cfm that cools up to 1600 square feet of attic space Galvanized steel housing with mounting brackets for easy installation 14-Inch diameter steel propeller specially engineered to maximize air movement