Cold weather doesn't mean you have to be cold too! Heat things up and stay toasty warm from your head to your toes with the Mr. Heater Big Buddy Portable Propane Heater. This indoor safe heater features high, medium, and low settings and gives off 4,000, 9,000, or 18,000 BTU per hour. The single control start knob allows you to quickly and easily get things warmed up. This heater is ideal for cabins, patios, garages, barns, hunting blinds, tents, sporting events, and more. It has the capability to heat an enclosed space of up to 450 square feet. You'll be warm and safe, because this heater features an automatic oxygen depletion sensor and an accidental tip over shutoff. This heater can be used with 2, 1 pound propane tanks, or connected to a propane tank of up to 40 pounds with the use of an additional hose and filter. Hose and filter are not included.