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 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. Emits 4,000, 9,000 or 18,000 BTU/hr radiant heat Designed and approved for indoor and outdoor use Exclusively at Lowe's Heats up to approximately 400 square feet Dual heating system combines radiant heat comfort with convection heat air flow Features emergency low oxygen safety system 3 temperature settings: low, medium, and high Runs 10.8 hours on low; 4.8 hours on medium; 2.4 hours on high Equipped with accidental tip-over switch Color/Finish Family: Black Series Name: Buddy heater Type: Radiant Assembled Depth (Inches): 12 Assembled Height (Inches): 17.75 Assembled Weight (lbs.): 18.2 Assembled Width (Inches): 19 Assembly Required: No Auxiliary Power Outlet: Yes Cordless: Yes Heating Area Range (Sq. Ft.): Less than 1000 Hose and Regulator Included: No Ignition Type: Piezo Indoor/Outdoor: Indoor/Outdoor Max Operating Hours on 1-Lb. LP Tank: 6 Max Operating Hours on 100-Lb. LP Tank: 0.0 Max Operating Hours on 20-Lb. LP Tank: 108.0 Max Operating Hours on 40-Lb. LP Tank: 216 Maximum BTUs: 18000 Maximum Heating Area (Sq. Feet): 450 Overheat Shut-Off: No Oxygen Depletion Sensor: Yes Portable: Yes Thermostat: No Tip-Over Safety Switch: Yes Use Location: Outdoor Variable Heat Settings: Yes Warranty: 1-year limited Compatible Tank Sizes: 1-lb. or 20-lb. CA Residents: Prop 65 Warning(s): Yes OMNI Safety Listing: No PFS Safety Listing: No Safety Listing: CSA safety listing UNSPSC: 40101600