The new Skimmer Plug™ offers you a simple and proven method of winterizing your in-ground pool skimmer for the off-season. Using the Skimmer Plug, there's no need to drain the water from your pool, AND no need to buy a new skimmer faceplate. That's because the Skimmer Plug™ is made to fit the inside opening of your existing in-ground skimmer faceplate perfectly, creating a water-tight seal that effectively keeps your skimmer dry all winter long, preventing freeze damage without draining the pool.