In The Swim - Ultra 20' x 40 Rectangle Grey Solar Cover, 16 Mil

16 Mil Ultra 20x40 Solar Pool Cover Offers Ultimate Heating & Retention. The 16 mil solar pool cover heats up your pool and keeps it warm for longer using nothing but the energy of the sun. Constructed of thick, UV stabilized resin, the 20x40 pool cover can raise your pool water's temperature by up to 18 degrees(F) and retains the heat overnight for comfortable swimming all day and into the evening.

8 Year Limited Warranty

To enhance the durability of your solar cover:

• Put away your solar cover (covered or in a shady location) when shocking the pool
• Place cover on the pool only when chlorine level is below 2.5 ppm
• Place cover on the pool only when pH level is above 7.2
• Remove sticks and leaves gently and clean the cover if dirty
• When storing a solar cover on a reel, use the Poly Tarp or the Solar Cover
• When storing a solar cover folded, place in a shady area or inside