Reznor Radiant low intensity tube heater natural gas. Model VPSN60A-20 60,000 BTU with 20 foot tube assy (Unit works with 20 to 40 foot of tubes). LP available for $50.00 more. 115v, powervented Tubular heat exchanger, direct spark ignition. 321 lbs, Please call us at (952) 884-8266 for freight rates. After hours call (612) 518-6683. Minnesota residents will be charged sales tax.