- Heater Union Part Type: Split Nut
- First Plumbing Connection Size: 2", 2-3/16"
- First Plumbing Connection Type: Female Buttress Thread (fbt), Large Flange (For Metal Housings)
- Second Plumbing Connection Size: 2", 2-3/16"
- Second Plumbing Connection Type: Female Buttress Thread (fbt), Large Flange (For Metal Housings
Replaces: 121108020 , 20-1021 , 400-5161B , 400-5161 , 50086 , 5039-029 , 5039-050 , 610266 , 621503 , 700310C , 806105081858 , 9175-31 , RPL1-20-208S , WW4005161B , WW4005421B , WWP-101-5421