Heavy Steel Construction. Outdoor Heaters Are The Perfect Solution To Cold Weather Work And Play! They Attach Easily To A Standard 20lb LP Cylinder. (CYLINDER NOT INCLUDED) To Provide Instant Infra-Red Heat. Includes Adjustable Heat Control Value And Built-In Safety Shut-Off. Double Burner Heads Swivel Independently. 18 -26-30,000 BTU's. Match Light.