Heavy-duty design built for the job site. 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 job site. 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.