SmartLine 21' Round Coastal Rock Overlap Above-Ground Pool Liner — 48"/52" Height, 25 Gauge

SmartLine 21' Round Coastal Rock Overlap liner for above-ground pools — manufactured in the USA by seasoned pool industry professionals with over 50 years of experience. Constructed from 100% virgin vinyl at 25 gauge thickness, this liner offers built-in UV protection and is formulated to resist punctures, cracks and fading. The factory hand-folded finish provides an easier, wrinkle-free installation for overlap-style fittings. Designed to tolerate harsh pool chemicals and prolonged sun exposure across a wide temperature range (-50°F to 130°F). A gasket set is included to help prevent leaks and fits all thru-wall skimmers and water return lines.