SmartLine 21' Round Overlap Pool Liner — Swirl Bottom, 48"/52" Height, 25 Gauge

Made in the USA by top pool-industry professionals with over 50 years of experience, this SmartLine 21' round overlap liner features a swirl bottom and 25 gauge construction. Manufactured from 100% virgin vinyl with built-in UV protection, it resists punctures, cracks and fading even with prolonged sun exposure. The liner is hand folded for an easier, wrinkle-free installation. It stands up to harsh pool chemicals and extreme temperatures, performing in ranges from -50°F to 130°F. An included gasket set helps prevent leaks and fits all thru-wall skimmers and water return lines.