Duraheat, 135,000 btu, kerosene portable forced air heater, with thermostat, heats up to 3,200 sqft, 10 gallon fuel tank, 500 cfm, digital diagnostics & led temperature indicator, threaded axle system, flat free cold weather tires, 2 lift handles, auxiliary power outlet, & run time fuel gauge, convenient drain plug, on/off switch, includes ul listed large capacity motors & fuse protected electrical system, all components are securely fastened into chassis to insure long life, utilizes heavy duty spark technology for in field endurance, multi-fuel capable, has been factory tested to operate with 1k kerosene, #1 & #2 fuel oil & diesel, jp-8 & jet-a fuels.