Big Buddy 18,000 BTU Radiant Propane Heater

Indoor safe propane heater. Mr. Heater Big Buddy radiant heater provides safe heat for chilly garages, tents, patios, porches, cabins, etc. Three heat settings: 4000, 9000, or 18,000 BTU (British Thermal Unit). It has been designed and approved for indoor use. Features include built-in protection probe, easy carry handle, accidental tip-over safet shut-off, automatic low oxygen shut off system, blower fan, power On/Off switch, large 4 position heat level control knob with built-in piezo starter, integrated. Quiet, odor-free, lightweight, and portable. Uses 1 or 2 one lb. propane cylinders or larger tank with optional 5 Ft. hose or 12 Ft. hose. Uses A/C adapter or 4 "D" cell batteries to power blower. CSA (Canadian Standards Association) listed. Low oxygen sensor prohibits use at altitudes of 7000 Ft. or above. Heats up to 108 hours on a single 20 Lb. propane tank