20' x 40' Rectangular 12 Mil Extra Heavy Solar Pool Cover

20'x 40' rectangular 12 mil Solar Pool Cover by Midwest Canvas The 12 mil Rectangular Space Age Solar Cover is a step up from our 8 mil solar cover. The extra thickness extends the life and also helps retain more heat in your swimming pool!  The 12 mil Clear solar cover is the perfect addition to your swimming pool this summer.   5 Year Warranty, 2 Years Full   Tip: If you use chlorine in your pool, by rinsing off this cover when you take it off of your pool you are likely to extend the life of the cover