YUMA AD036 3,000-BTU Catalytic Heater Safe Portable Flameless Propane Gas 3,000-BTU catalytic heater Safety fuel shut-off if flame goes out or tip over Efficient flameless portable heater, ideal for using in the game, tent, garage or around the home. Limited five years warranty Up to 7 hours on 1 lb (16.4 oz) cylinder (not included)