The Mr. Heater 540° Heater 30,000 – 45,000 BTU Liquid Propane Tank Top heater with soft nose POL is the perfect solution for a variety of outdoor heating applications. This heater is constructed with an adjustable 360° burner head that swivels up to 180° which allows you to focus radiant heat in multiple directions. The MH540T is easy to light due to the push button TE valve, and its high quality stainless steel components bring you longer lasting durability and the standard tip over safety shut-off switch brings you peace of mind.