18' x 36' Rectangle Commercial Grade Mesh Safety Pool Cover - 99% Sunblock with 4x8 Center End Step

18' x 36' Rectangular Commercial Grade Mesh Safety Pool Cover 99% Sunblock with 4x8 Center End Step Made In USA by HPI Yard Guard The HPI Deck-Lock System is the latest in pool cover technology. HPI created a Bloc Mesh 99 that has 99% sunblock protection. The more sun you block, the less likely you are to grow algae and have sediment build-up.Specs 99% Shade Block Rating 5x5 Grid / Strap Spacing 18 Mil Thickness 34x11 Scrim Count - Flattened fiber for the ultimate sunblock rating 7 gpm flow rate 12 Year Warranty Features Made in the USA Black thread (triple stitching) cross tack & box tack at all perimeter stress points. Straps run on both top and bottom of the cover for added strength. Raised rub strip to prevent chafing on coping. Porous, tight mesh, giving the maximum of strength. Reinforced webbing top and bottom on every seam and around the perimeter. All covers are manufactured by the most modern of equipment including a computerized cutting and shaping system. All specia