Duraheat, 170,000 BTU, Kerosene Portable Forced Air Heater With Dual Heat Technology, 135K On Low, 170K On High, Commercial Grade, Heats Up To 4,000 SQFT, Includes Digital Diagnostics & LED Temperature Indicator, Flat Free Cold Weather Tires, Threaded Axle System, Built In Thermostat, 13 Gallon Fuel Tank, Run Time Fuel Gauge, Auxiliary Power Outlet, One Touch Electric Start, On/Off Switch, Built In Pressure Gauge, Extension Cord Wrap, Dual Lift Handles & Convenient Drain Plug, 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.