Reznor 1036538R NG to LP Gas Conversion Kit for UDX / UDZ / UBX /
Reznor 1036538R NG to LP Gas Conversion Kit for UDX / UDZ / UBX / UBZ 100 and 125 Unit Heaters. Reznor UBX-100 Unit Heaters. Reznor UBX-125 Unit Heaters. Reznor UBZ-100 Unit Heaters. Reznor UBZ-125 Unit Heaters.