This Skimmer Plug™ offers a simple yet revolutionary method for servicing and winterizing above ground and in ground pool skimmers. A first of its kind, the patent pending Skimmer Plug™ is superior to any other skimmer closure or winterizing device on the market, being more affordable, as well as much easier to use. The Skimmer Plug™ not only fits all OEM skimmers without the need to replace the original skimmer faceplate, it also works as a much better replacement lid for any specialty faceplate like The SkimSaver™ Lid'L Seal™ and other similar "Skimmer Closer Systems". With no installation or tools required, the Skimmer Plug™ securely fits into the skimmer opening using our exclusive 3/4" thick Rovaseal™ thermo insulated layer to plug and “grip” the faceplate, creating a 100% air-tight seal. Ice is no match for the Skimmer Plugs rigid outer plate, providing a durable and secure layer of protection through the winter. The Skimmer Plug™ is molded from ABS plastic and 3/4" Rovaseal™, then laminated with a polyurethane reactive hot melt that fuses the layers together. Made UV resistant, chemical resistant.