Midwest Canvas -2YR FULL 20x40 RECT SOLAR COVER 12 MIL CLEAR 20X40 RECT 5YRThis 20x40 ft rectangular solar cover from Midwest Canvas is designed to efficiently retain heat and reduce evaporation, keeping your pool warmer for longer. Its clear 12 mil material allows maximum sunlight penetration, enhancing heat retention. Made with durable polyethylene, this cover is built to last and withstand the elements. It also helps keep debris out of your pool, reducing maintenance time and the need for excessive chemicals. The