The Triple Dome Commercial Outdoor Patio Heater by Uniflame uses a 20-pound LP tank and covers a circumference of 20 feet. This outdoor heater is made of stainless steel and features a safety tilt switch with 100% shutoff, a pilot light, weather resistant hardware, a removable control panel and a sliding tank shroud. The engine system has a capacity of 40000 BTU and a multi-spark electronic ignition for quick and easy starts. An optional high-quality heater cover with a zipper closure (sold separately) protects the heater from the weather. Ships via FedEx.