Description The Dyna-Glo 200,000 BTU Portable Convection Tower Propane Heater features 3 heat settings and a 360 heat radius that offers plenty of warmth for areas of up to 4,700 sq. ft. The convenient, one-hand piezo ignition helps provide a fast startup. The non-slip base and automatic shutoff help ensure safety.PRODUCT DETAIL:Variable heat settings can produce 50,000, 120,000 and 200,000 BTUs/hour to keep you warm and comfortable Heats up to 4,700 sq. ft. with a 360 heat radius for ample coverage 1-hand piezo ignition helps provide quick and easy startup Automatic shutoff and sturdy, non-slip base help ensure safe use Auto safety shut-off and large sturdy base to prevent tipping 100 lb. LP tank is required to run at higher BTU settings greater than 50K 100 lb. run time: 43 hours at 50K, 18 hours at 120K, 11 hours at 200K 40 lb. run time: 17 hours at 50K 20 lb. run time: 9-hours at 50K