Upgrade your pool with this high quality 28' Round 48-52" Wall Boulder Overlap Above Ground Liner, designed to provide a snug, secure fit for above ground pools. GLI’s Splash Series Overlap liners are the ideal economical option for your liner replacement needs and can accommodate any 48” or 52” above ground pool wall. This liner is built to withstand the elements and resist fading, punctures, and everyday wear. The overlap style ensures an easy installation.