Swimline Overlap 21' Round Blue 60 in. Expandable Depth Above Ground Pool Liner, 20 Mil LI21XL
Swimline

Swimline Overlap 21' Round Blue 60 in. Expandable Depth Above Ground Pool Liner, 20 Mil LI21XL

4.8 stars out of 39 reviews
(4.8)|
39 ratings
Swimline Overlap 21' Round Blue 60 in. Expandable Depth Above Ground Pool Liner, 20 Mil LI21XLSwimline Overlap 21 Round Blue 60 in Expandable Depth Above Ground Pool Liner 20 Mil LI21XLSwimline LI18XL 18ft Solid Blue Expandable Above Ground Pool LinerSmartLine 27 Round Solid Blue Overlap Expandable Liner 60 Height 20 Gauge
Size:21' Round-Out of stock

Key item features

  • Durable Protection: This 20 mil liner offers robust protection against chemical exposure and UV fading, ensuring longevity and maintaining its blue color.
  • Overlap Design: Engineered as an overlap liner, it is designed to hang securely over the side of an above-ground pool wall.
  • Expandable Depth: Featuring excess material, the liner accommodates common 48-inch or 52-inch pool walls and can expand to a 60-inch depth.
  • Secure Installation: The liner is held firmly in place using pool coping strips, which are not included with the product.
  • Customizable Fit: After installation, any excess material can be easily trimmed to achieve a precise and clean fit for your pool.
  • Round Dimensions: Specifically designed for 21-foot round above-ground pools, ensuring a proper fit for this common pool size.
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Current price is $170.45
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4.8 out of 5 stars
stars39 ratings29 reviews
How item rating is calculated
  1. 5 stars87% (34)
  2. 4 stars8% (3)
  3. 3 stars3% (1)
  4. 2 stars0% (0)
  5. 1 star3% (1)
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Showing 1-3 of 29 reviews

Jun 11, 2025
Craig Baskin
5 out of 5 stars review

Seller Verified Purchase

I bought the liner with cove moulding and a rhino pad. The 25 mil liner seems plenty thick but still will stretch where needed. I did it with no help one step at a time. Tamp the sand down when damp and add the pad.it came out pretty smooth, better than before.I think cove moulding is necessary

Review from poolsupplies.com
Helpful?28TUY1EISFP1138484112
Jun 16, 2025
Kristin Jordan
5 out of 5 stars review

Seller Verified Purchase

Pool Supplies has been the best company to work with. They are professional and quick to respond to any questions you may have. Will be ordering from them all of the time for pool needs.

Review from poolsupplies.com
Helpful?28TUY1EISFP1138484112
Aug 1, 2025
Keeny Ford
5 out of 5 stars review

Seller Verified Purchase

I love it I got exactly what I was looking for and got a far price quantity and fast shippping. What more could anyone want

Review from poolsupplies.com
Helpful?28TUY1EISFP1138484112