Robelle Platinum 21' Solid Aboveground Pool Winter Cover - Silver/Black

Attach this Robelle Platinum 21 Solid Aboveground Pool Winter Cover to your aboveground swimming pool to protect it during the harsh winter months. Crafted from polyethylene, the cover boasts a 3.26-oz./sq. yd. weight and 12 x 10 scrim for durability. A 4 overlap helps ensure a proper fit, while the aluminum grommets, plastic-coated cable and ratchet lock deliver a tight, secure fit. The covers topside is treated to fend off damaging UV rays, and the black bottom helps inhibit the growth of algae in your pool water.Product Features:Fits 21 round aboveground swimming pools3.26 oz./sq. yd. polyethylene material and 12 x 10 scrim count4 overlap2 double-chain marine-grade stitching lines for everyday durabilityUV-treated topsideBlack bottom helps prevent the growth of algaeTwo 4" on center aluminum grommets spaced 4 apart around the perimeterPlastic-coated cable threads through the grommets and secures with a ratchet lockIncludes pool cover, winch and cableWarranty: 12 years(Model 3321-4)