SmartLine 21' Round Boulder Swirl Unibead Above Ground Pool Liner, 52" Height, 25 Gauge (Made in USA)

Proudly manufactured in the USA by pool industry professionals with over 50 years of experience, this SmartLine 21' Round Boulder Swirl Unibead liner is designed for long-lasting performance. Constructed from 100% virgin vinyl, the 25 Gauge material offers strong resistance to punctures, cracking and color fade and includes built-in UV protection. Each liner is hand-folded to make installation straightforward and to minimize wrinkles or other fit imperfections. Engineered to endure pool chemicals and extended sun exposure, it reliably performs in extreme 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.