Seal and winterize your Hayward SP1085 wide-mouth pool skimmer in seconds without draining water or removing faceplates. Featuring a patented tool-free push-in design, the Skimmer Plug IGWM-H utilizes an exclusive Rovaseal thermo-insulated expanding foam layer that compresses tightly against the inner faceplate rim to form a 100% air- and water-tight barrier.