https://www.acehardware.com/departments/automotive-rv-and-marine/recreational-vehicle-parts-and-accessories/rv-electrical-equipment/8499089
Camco Permanent Plumbing Adapter 1 pk Mfr# 39422 - Ace Hardware
3" Permanent Plumbing Adapter allows hookup of standard RV bayonet connection to 3" threaded plumbing pipe.Find the PERMNT PLMBNG ADPTR 3 at Ace.
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