Dyna-Glo KFA125DGD Portable 125,000-BTU Multi-Fuel Forced Air Heater with 10-Inch Flat-Free Wheels, 3,000-Square Foot Heating Area Patented Dual Heat Technology Safety auto fuel shutoff and overheat shutoff protection Durable commercial-grade product Separate fuel cap and exclusive run time fuel gauge Built-in comfort control thermostat