Rectangle Solar Pool Covers, 12 Mil are a fantastic way to use free heat from the sun to warm your pool water during the day and prevent heat loss at night.

Rectangular Pool solar cover uses only the sun to warm your water
Built with flat reinforced seams and UV-stabilized resin construction for maximum durability
12 mil thick
Can raise pool water temperature by up 15 degrees
Insulates pool to keep water temperature constant
Reduces water evaporation, heat loss, and chemical costs
Can be used with pool heater or heat pump to maximize thermal efficiency and energy savings
Economical and environmentally friendly
Extend the swimming season - able to enjoy the pool earlier and later in the year
5 Year manufacturer limited warranty

Midwest Canvas - 16' x 40' Rectangle Blue Solar Pool Cover Five Year Warranty, 12 Mil