Reznor Radiant low intensity tube heater natural gas. Model VPSN100A-30 100,000 BTU with 30 foot tube assy (Unit works with 30 to 50 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.