Perfect for heating hunting and ice fishing shacks up to 100 sq. ft., the Mr. Heater Little Buddy heater connects directly to a 1-lb. propane cylinder. The attached handle makes it a breeze to take it anywhere and the 8 inch round stand takes up very little space, allowing it to fit almost anywhere. The easy-to-use push-button ignition and integrated Piezo sparking mechanism light the unit quickly and gets the heat flowing. Safe heata |for years to come. Small and compact, the Little Buddy heater is packed with features to keep you safe and secure, while keeping yourself warm. The Oxygen Depletion Sensor (ODS) automatically shuts down the Heater when there's not enough oxygen surrounding it. This'll prevent the unit from continuously using the oxygen in your shack, and leaves it for you. The accidental tip-over safety shut-off turns the unit off if it's tipped over by more than approximately 45Adeg. This prevents it from igniting your shack, grass, or papers on fire. Always remember to leave plenty of clearance around your heater for your safety and for the safety of those with you. 3,800 BTU per hour For use with propane gas Heats up to 100 sq. ft. One-button ignition on function 8 inch round stand uses little floor space Accidental tip-over safety shut-off Automatic low oxygen shut-off system (ODS) Connects directly to one 1 lb. disposable propane cylinder Quiet, clean, odor-free operation