2" Split Nut Union Old 415-5201 415-5161 for 2 inch plumbing. This is a split nut for repairing pump union connections to 2 inch plumbing on hot tubs. 2 inch plumbing refers to the inner diameter of...
2.5" Split Nut Union 0121108025 is a heater split nut for 2 1/2 inch plumbing connection and a 3 inch id heater.
Connects 2 1/2 inch plumbing to a 3 inch id heater.
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121108025
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