Commercial Natural Gas Patio Heaters bring indoor comfort and convenience outdoors. This patio heater has an inviting 15 to 20-foot circle of warmth. They can raise the outdoor temperatures 10F to 25F degrees allowing you to enjoy your backyard much later into the fall than ever before. While they won't turn the dead of winter into a summer day their adjustable temperature setting allows perfect control for a brisk evening barbecue early morning coffee or any other outdoor activity. Commercial Natural Gas Patio Heaters are safe economical and easy to use. They provide 40000 BTUs of heat a durable stainless steel burner and premium construction allowing for quick and easy assembly. This heater features a more powerful IPP E-3 engine which by efficient design increases the output of the heater.Easy assembly with basic household tools Engine system designed for commercial use Natural Gas fuel - hose for plumbing not included (must be plumbed directly to gas source) Multispark Electronic Start Two Year Limited Warranty Commercial Grade IPP E-3 Engine