Reznor Radiant low intensity tube heater natural gas. Model VPSN200A-50 200,000 BTU with 50 foot tube assy (Unit works with 50 to 80 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.