Unibead Pool liners work in most any above ground pool and are very easy to install. Unibeads attach by simply hooking onto the top of the pool wall. If using a bead track, tear off the removable hook and snap liner into the track or receiver. This stylish upgraded liner needs no additional parts for it's use. Great waterline graphics, 20ga or thicker 25ga vinyl, 48", 52" and 54" wall heights available. Note: It's very important to measure your pool including wall height before ordering any unibead liner, and use only the correct wall height for your pool. Using the incorrect height liner can cause unwanted wrinkles.