Feherguard 1-1/2" Threaded Winterizing Plug

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The Feherguard 1-1/2" Yellow Winterizing Plug is designed for use with pool skimmer to enhance freeze protection during the winter months. This threaded plug fits securely into the bottom of most skimmers, sealing off plumbing lines and adding an extra layer of protection against freeze damage. What sets this plug apart is its built-in female threading, which allows you to screw in a standard 500ml water or pop bottle. When inserted the water bottle absorbs pressure from ice expansion and temperature fluctuations, helping preserve the integrity of the skimmer and piping by taking the brunt of the damage. Details: Threaded Yellow color 1-1/2" diameter Show more