The STS-JZ commercial and industrial infrared tube heater has been designed for uniform heat distribution for a number of applications that require space heating, such as warehouses, industrial plants, loading docks and more. The STS-JZ series offers eight firing rates from 45,000 to 200,000 Btus per hour and lengths from 10 feet to 70 feet. The products come with a 10-year warranty on the burner cup and heat exchanger tubes, plus a three-year warranty on all other parts.