POOL LINER COVE 17 PACK For 21' Round Pools and 15'x25' Oval A SMALL INVESTMENT THAT WILL ADD YEARS TO THE LIFE OF YOUR ABOVE-GROUND LINER! Make sure to place pool cove around the bottom, inside circumference of your pool wall before installing your new liner. Pool cove will help prevent excessive stretching and premature wearing, adding years to the life of your new liner. Peel & Stick pool cove has an adhesive backing for quick, easy installation. Clip & Stick pool cove is notched out so that it securely snaps into your pool’s wall track, and also includes a convenient adhesive backing. Both types of pool cove are available in 48” lengths.