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

Designed for 21' round above-ground pools, the SmartLine Mosaic Diamond Unibead liner is a 25 gauge, 52" high replacement liner built for durability. Made in the USA by top pool industry professionals with over 50 years of experience, this liner is manufactured from 100% virgin vinyl and includes built-in UV protection. The material resists punctures, cracks and fading while withstanding harsh pool chemicals and extended sun exposure in temperatures ranging from -50°F to 130°F. Each liner is hand-folded for easier installation and to reduce wrinkles and imperfections. A gasket set is included to prevent leaks and fits all thru-wall skimmers and water return lines.