Electrical sockets and switch plates on exterior walls can be hidden sources of drafts that may lead to high heating and cooling costs. Duck® Brand Socket Sealers® Universal act as a buffer between your home’s inside and the outdoor air, helping to keep conditioned air in and outside air out. The seal is easily installed by fitting snuggly behind the outlet or switch’s outer faceplate cover. These Socket Sealers are designed to fit an outlet, toggle light switch and standard light switch — no need to buy multiple solutions to insulate light switches or outlets. Plus, the removable sides mean each seal can be customized for use with 1-Gang outlets, or combined to insulate unlimited multi-gang outlets.