Heavy-duty design built for the jobsite. This thermostatically controlled Mr. Heater 400,000 Btu propane forced air heater comes with a standard 10 ft hose, regulator and all the safety you would expect of a Mr. Heater product. Equipped with factory installed high limit switch and continuous solid state ignition, you can feel comfortable using this heater on any jobsite. Just plug the heater into a 110 V outlet then hook up the included hose and regulator to a 100 lb propane tank or larger, then you are ready to take the chill out of any job.