This portable propane heater is highly popular in North America. Its patented radiant design can produce 4,000-9,000 BTUs, making it perfect for heating enclosed spaces like large tents up to 200 sq. ft. The heater's unique size to BTU ratio and fold down handle maximize heat output while minimizing space. With a swivel regulator, it can be easily switched from a disposable cylinder to a remote gas supply with the purchase of a hose and filter. Lighting the unit is simple with a pilot knob and integrated Piezo sparking mechanism. Safety features include an Oxygen Depletion Sensor and accidental tip-over shut-off. This heater runs off a 1 lb. cylinder or can be directly connected to a 20 lb. cylinder with the optional hose and filter.