SET TWO STAGE BURNER KIT 80/60 NG USA builderSchwank Two-Stage burner kit, 80/60 MBH, Natural Gas, mounts to 20' or 30' tubes. Log in for pricing
phantomSchwank Two Stage Tube Heater: Black Aluminum, 80/60 MBH NG; 10 ft; 120 Volt SCHW-STP-TA08-10-BN Two-stage outdoor patio tube heater, 80/60 MBH, 12', 120V/Ø Log in for pricing