SmartLine 21' Round Overlap Pool Liner — 54" Height, 25 Gauge, Coastal Rock — Hand-Folded, Made in USA

Manufactured in the USA by top pool industry professionals for over 50 years, this SmartLine 21' round overlap liner combines durable construction with installer-friendly design. Built from 100% virgin vinyl with integrated UV protection, the liner resists punctures, cracks and fading for long-lasting appearance. Each liner is hand-folded to allow smooth, wrinkle-free installation and a professional fit. It tolerates harsh pool chemicals and prolonged sun exposure, performing reliably in temperatures 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.