Cold campsites and frozen lakes call for the warmth of a Big Buddy heater. For your next excursion the Big Buddy will keep you comfortable with up to 18 000 BTU of heat. Swivel regulators make for easy setup; just screw on two 1-lb propane cylinders or connect to a 20-lb tank using Buddy accessories. The 450 square feet of coverage makes any ice shanty a sauna and any deck a sunroom. With the heaters? registered Life Safety System you won?t sweat too much knowing the oxygen depletion sensor thermal shut-down system and tip-over switch are keeping you safe. For all of your indoor and outdoor adventures the Big Buddy is there for you.