Smartline Swirl Bottom 21-Foot Round Liner | Overlap Style | 48-to-52-Inch Wall Height | 25 Gauge Virgin Vinyl | Designed for Steel Sided Above-Ground Swimming Pools | Universal Gasket Kit Included

MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Swirl Bottom pattern offers durability while not breaking the bank.

Be sure to check the measurements of your swimming pool to assure the correct size is purchased.

Pool height is determined by measuring the outside wall from the ground to underneath the top rail.

Round pool size is determined by measuring from the center point wall to wall in order to obtain the diameter.

PRETTY PLEASING PATTERN – Your swimming pool will have a nearly bottomless appearance with the rolling water along the floor of this Swirl Bottom pattern liner.

The North American cut material is hand-folded to prevent permanent creasing and excess wrinkling.

Before installing, lay the liner out in the sun for a minimum of one hour to warm up the vinyl ensuring it is able to stretch when adding water.

The best temperatures to install would be between 70-80 degrees.