It's like a portable campfire that can be moved around your campsite. Sporting heavy-duty, lockable casters, this 18,000-BTU heater delivers a maximum of 400 sq. ft. of heat wherever it's needed. Constructed of steel, this rugged cabinet-style heater features a tip-over switch and a low-oxygen shut-off system for optimal safety. Heat settings include 6,000, 12,000 and 18,000 BTU. Peizo ignition makes starting quick and easy. Runs off a 20-lb. propane cylinder mounted inside. Includes hose and regulator. Recommended for use at altitudes below 7,000 feet. For outdoor use only.