SmartLine 21' Round Island Tile Unibead Above-Ground Pool Liner — 52" Height, 25 Gauge

Manufactured in the USA by top pool industry professionals with over 50 years of experience, this SmartLine 21' Round Island Tile Unibead liner combines durable construction with easy installation. Built from 100% virgin vinyl at 25 gauge and a 52" height, the liner resists punctures, cracking and fading while featuring built-in UV protection for extended life. Each liner is hand-folded to reduce wrinkles and simplify fitting, and the vinyl formulation endures harsh pool chemicals and long sun exposure across a temperature range of -50°F to 130°F. A gasket set is included to help prevent leaks and is designed to fit all thru-wall skimmers and water return lines.