Low intensity Infrared heater that utilizes the best material and crafted for optimum performance. Designed for years of trouble-free operation. • 40 - 225 MBH input • 10 - 80 ft. tube length • Single Stage (ON-1) and Two Stage (ON-2) • 100% SPECULAR design reflector • Nickel chrome multi stage burner cup • Resilient mounted blower assembly • Field selectable 24V or 120V operation (single stage) • 24VAC terminal block connection • Simple installation • Low profile burner cabinet • Zero clearance hanger design available • Extra heavy duty tube coupling • Reliable DSI ignition system c/w post purge • Reduced electrical operating cost • POTTED ignition module • Durable powder coat UV resistant paint