SmartLine 15' x 21' Oval Boulder Swirl Overlap Pool Liner — 48"/52" Height, 20 Gauge

SmartLine 15' x 21' Oval Boulder Swirl overlap above-ground pool liner, engineered for 48"/52" wall heights and constructed from durable 20 gauge material. Manufactured in the USA by pool-industry professionals with over 50 years of experience, this liner uses 100% virgin vinyl for long-lasting performance. The vinyl formula includes built-in UV protection and is formulated to resist punctures, cracking and fading. Each liner is hand-folded to minimize wrinkles and simplify installation, producing a smooth fit without imperfections. It is built to tolerate harsh pool chemicals and prolonged sun exposure across a wide temperature range from -50°F to 130°F. A gasket set is included to help prevent leaks and is compatible with all thru-wall skimmers and water return lines.