Threaded Pool Return Line Plug - IG Pools
<b>SAFELY SEAL OFF IN-GROUND POOL PLUMBING LINES DURING FREEZING CONDITIONS!</b><br><br> By simply screwing threaded plugs into all return and drain inlets after blowing out lines, you can prevent damage to plumbing lines due to the expansion of freezing water. The In-Ground threaded plug is the perfect winterizing solution for keeping your pool pipes damage-free during the winter.