"Cut your petroleum dependency back and stay warm by burning used crankcase, hydraulic and transmission oil. This super-powered heater produces a ton of heat to warm a very large space. U.S.A. Not for sale in California. Chimney Pipe Size in. 8, Blower CFM 1,696, Heating Capability sq. ft. 15,000, Amps 20, Dimensions L x W x H in. 54 x 46 x 36, Fuel Capacity gal. 215, Fuel Type Waste oil, Chimney Type Class A RV cover, Thermostat Included Yes, Volts 120, BTU Output 300,000. Burns Used W10-W50 crankcase oil 2.08 GPH fuel input"