This patented radiant 3,800 BTU Mr.Heater Liquid Propane heater connects directly to a 1 lb. propane cylinder and is the perfect solution for heating small spaces up to 95 sq. ft. The included base takes up little space and the integrated handle makes this heater an easy one to transport. To light the unit, simply push and hold the ignition button and the integrated Piezo sparking mechanism will take care of the rest. With the Oxygen Depletion Sensor (ODS) and accidental tip-over safety shut-off, you can be sure that you will enjoy years of comfortable outdoor safe heat.