heavy-duty design built for the jobsite. The Mr. Heater liquid propane forced air heater comes with a standard 10 ft hose and regulator and all the safety you would expect of a Mr. Heater product. Equipped with factory installed high-limit switches and thermoelectric safety valves, you can feel comfortable using these heaters on any jobsite. Just plug the heater into a 110 V outlet, hook-up the included hose and regulator to a 20 lb propane tank or larger and you are ready-to take the chill out of any job.