The Standard Residential Patio Heater gives your backyard, patio, or deck an inviting 18 foot diameter of warmth which allows you to sit back and enjoy life even in cooler temperatures. This item offers stainless steel burners and heating grid that"s built to last. Weigthed base for stability. LP tank is not included. Features include: * Safety auto shut-off tilt valve * 40,000 BTU"s * Heat range up to 18 ft in diameter * Uses standard 20 lb. LPG BBQ tank * 10 to 12 hours of burn time * 46,000 BTU"s * Safety auto shut-off tilt valve * Heat range up to 18 ft. in diameter * Uses standard 20-lb. LP Tank * 10 to 12 hours of burn time * Reflector diameter 31.9 in. * Base measures 18.1 in. diameter * Measures 87 inches high * Reliable Piezo igniter Wheels are included