Keep your wide mouth skimmer dry all winter long without draining your pool. No need to replace the faceplate, simply press the plug in to close off the skimmer. Simple, yet revolutionary method for servicing and winterizing above-ground pool skimmers. Water-tight seal. No tools required. Preparing your skimmer for winter or servicing has never been easier. Simply pull the plug off to re-open. Reusable-year after-year.