Commercial Propane Patio Heater. Our Stainless Steel Commercial Patio Heater is the most powerful patio heater on the market, with an amazing output of 46,000 BTU’s. Constructed of 304 commercial grade stainless steel, this heavy duty unit features an electronic ignition system and wheels for easy mobility. This superior patio heater is perfect for the serious outdoor entertainer. 46,000 BTU’s Commercial grade 304 Stainless steel frame, rich brushed finish Heat Range: up to 18 ft. diameter Unique “Pilotless System” – Single stage ignition process Electronic ignition Durable stainless steel burners & double mantle heating grid Safety auto shut off tilt valve Weighted base for stability Wheel assembly included Patented aluminum reflector hood Assembled Dimensions: 18″ Base, 33″ 5 Pc. Hood and 89″ Height, Weight: 51 lbs. Carton Dimensions: 18.10″ L x 18.10″ W x 31″ H, Weight: 55 lbs.