Specifications Compatible with Chlorinated pools, Saltwater pools & pools treated with the Pool Frog System Pool Closing Package Includes: 10′ x 18′ Oval Super Heavy XXtreme Winter Cover Winterizing Closing Kit for Pools up to 25,000 Gallons of Pool Water Air Pillow – 4′ x 8′ Skimmer Pool Closing Plate – Fits all standard skimmer openings. Plate measures 8 1/2″ wide X 9″ high and fits standard skimmers with an overall approximate size of 8″ wide X 8 1/4″ high Threaded Return Fitting Plug for all Standard Return Fittings – 1 1/2″ Super Heavy XXtreme Winter Cover Features The Super Heavy XXtreme is the heaviest above ground winter pool cover available 2-3x thicker than most above ground winter pool covers Fits 10′ x 18′ oval above ground swimming pools (overall cover size is approximately 14′ x 23′ oval) Heavy-stitch black binding on the border to prevent from tearing Brass Grommets Solid, super heavy duty cover is made from ultra-violet inhibited, woven triple-laminated polyethylene Highly resistant to punctures, tears, chlorine stains and other chemical stains Includes Cable and Winch (tightening device) Color: Brown Top/Black Underside 20-year manufacturer’s pro-rated warranty – 2 Years Full 100% warranty Expert Tips This is a top grade winter pool cover that typically lasts 4-6 pool seasons. Certain factors, such as harsh winters and unbalanced pH & chlorine levels can reduce the lifespan of pool covers. For detailed Pool Closing Instructions and Videos click here – Pool Closing Instructions and Videos California residentssee prop65 warnings Description Compatible with Chlorinated pools, Saltwater pools & pools treated with the Pool Frog System. The Super Heavy XXtreme Winter Cover is designed to stand up to winter after winter of ice and snow! Support / Downloads Pool Closing Instructions for Chlorinated Pools Pool Closing Instructions for Saltwater Pools Pool Closing Instructions for Pools Utilizing a Frog Pool Tender System Installation Instructions for Super Heavy XXtreme Winter Cover Limited Warranty