Be sure to check the measurements of your swimming pool to assure the correct size is purchased. Pool height is determined by measuring the outside wall from the ground to underneath the top rail. The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling. Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water. The best temperatures to install would be between 70-80 degrees. This rectangle beaded style liner works with pools with flat-bottoms measuring 48". For beaded style pools, use the standard bead section atop the liner material to insert and snap into the bead receiver opening. Be sure to have the correct wall height measurements prior to ordering. Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one. Swim care-free knowing your liner can tough it out through abrasion, chemicals and UV fading thanks to the use of Lamiclear technology. The layers are made of an acrylic top coat, a UV resistant print layer, and a 100% virgin vinyl base. Please Note: Our liners fit Kayak Pools manufactured between 1977-2000. These liners do NOT require the use of cove molding. › See more product details