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. 250,000 – 400,000 BTU per hour For use with propane gas Heats up to 10,000 sq ft Operates up to 17 hours on two 100 lb propane tanks set to low setting