The AZ Patio Heaters 87 Inch Freestanding Propane Patio Heater offers variable settings, giving you greater control over your heater than ever before. The heater possessed wheels to increase its mobility, so you can freely maneuver it wherever you need it most. The heater is able to operate on a 20-pound propane tank, and the included thermocouple and anti-tilt devices provide an extra layer of security during operation. The included shield and adjustable table provide more protection and utility for the heater.