SmartLine 21' Round Sunlight Overlap Above-Ground Pool Liner — 20 Gauge, Fits 48"/52" Walls

Replacement liner for 21' round above-ground pools: SmartLine Sunlight Overlap, 20 gauge, designed for 48"/52" wall heights. Manufactured in the USA by seasoned pool industry professionals with over 50 years of experience. Made from 100% virgin vinyl with built-in UV protection to resist punctures, cracking and fading. Each liner is hand-folded to promote a smooth, wrinkle-free installation. Formulated to stand up to harsh pool chemicals and prolonged sun exposure, it performs across a wide temperature range from -50°F to 130°F. Includes a gasket set that fits all thru-wall skimmers and water return lines to help prevent leaks.