Mr. Heater 15,000 BTU Radiant Single Tank Top Propane Heater, 9 in. is designed to efficiently provide heat to outdoor spaces, making it for construction sites, loading docks, sporting events, hunting, fishing, camping, and more. This propane heater features a high-medium-low regulator, safety shutoff, and a soft nose P.O.L. connection for added convenience and safety. Built with high-quality chrome and stainless steel components, it long-lasting durability with a higher grade mesh. The standard safety shut-off switch ensures peace of mind during use. It is intended for direct connection to 5-20 lb. bulk cylinders and measures 8 inches wide by 9 inches long. When used with a 20 lb. cylinder, it provides a high fire time of up to 36 hours.