SmartLine 21' Round River Slate Overlap Above Ground Swimming Pool Liner, 54" Height, 20 Gauge
SmartLine 21' Round River Slate Overlap Above Ground Swimming Pool Liner, 54" Height, 20 Gauge
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SmartLine 21' Round River Slate Overlap Above Ground Swimming Pool Liner, 54" Height, 20 Gauge

4.7 stars out of 196 reviews
(4.7)|
196 ratings
SmartLine 21' Round River Slate Overlap Above Ground Swimming Pool Liner, 54" Height, 20 GaugeSmartLine 21 Round Overlap Liner 54 Height 25 Gauge River SlateSmartLine 21 Round Tidal Surge Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Swirl Bottom Overlap Liner 48 52 Height 25 GaugeSmartLine 21 Round Overlap Liner 54 Height 25 Gauge Coastal RockSmartLine 21 Round Solid Blue Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Caribbean Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Sunlight Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Cracked Glass Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Tidal Surge Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Swirl Tile Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Boulder Swirl Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Swirl Bottom Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Pacific Ice Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Coastal Rock Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Bedrock Overlap Liner 48 to 52 Height 25 GaugeSmartLine 21 Round Waterfall Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 Round Waterfall Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Antilles Dolphin Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Rock Island Overlap Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Overlap Liner 54 Height 25 Gauge Seaside LagoonSmartLine 21 Round Solid Blue Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Solid Blue Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Overlap Liner 54 Height 25 Gauge Boulder SwirlSmartLine 21 Round Swirl Tile Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Bedrock Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Caribbean Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Cracked Glass Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Pebble Bottom Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Waves of Poseidon Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Tidal Surge Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Waves of Poseidon Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 Round Pacific Ice Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Waves of Poseidon Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Seaside Lagoon Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 Round Sunlight Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Tidal Surge Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 Round Overlap Liner 48 to 52 Height 25 Gauge Seaside LagoonSmartLine 21 Round Boulder Swirl Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 Round Antilles Dolphin Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Crystal Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 Round Solid Blue Overlap Above Ground Swimming Pool Liner 48 52 Height 30 GaugeSmartLine 21 Round Waterfall Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Antilles Dolphin Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Waterfall Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Boulder Swirl Overlap Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 Round Rock Island Overlap Pool Liner 48 52 Height 25 GaugeSmartLine 21 Round Waves of Poseidon Overlap Liner 48 52 Height 25 GaugeSmartLine 21 Round Sunlight Overlap Above Ground Swimming Pool Liner 54 Height 20 Gauge

Key item features

  • SmartLine 21' Round River Slate Overlap Above Ground Swimming Pool Liner, 54" Height, 20 Gauge
  • Manufactured in the USA by top pool industry professionals for over 50 years
  • Crafted from 100% virgin vinyl, our liners resist punctures, cracks and fading and has built-in UV protection
  • Our SmartLine liners are hand folded, ensuring that they can be installed easily without wrinkles or imperfections
  • Our liners withstand harsh pool chemicals and extended sunlight in temperatures ranging from -50°F to 130°F
  • Prevent leaks with the included gasket set that fits all thru-wall skimmers and water return lines
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4.7 out of 5 stars
stars196 ratings147 reviews
How item rating is calculated
  1. 5 stars82% (160)
  2. 4 stars12% (24)
  3. 3 stars5% (9)
  4. 2 stars1% (1)
  5. 1 star1% (2)

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Showing 1-3 of 147 reviews

Sep 18, 2025
wade utter
5 out of 5 stars review

Seller Verified Purchase

We ordered a new above ground pool liner from PoolSupplies. The Liner arrived quickly in just a few days. Unfortunately it was discovered by my installer during removal of the old liner that our pool wall had seriously deteriorated where the skimmer is attached as well as a few of the bottom rails for the pool wall. This was not totally unexpected as the pool was very old. The return of the liner to Poolsupplies was simple and they also were very helpful in sending me a FedEx shipping label at a much lower cost than thru UPS. PoolSupplies was great throughout the whole process.

Review from poolsupplies.com
Helpful?51OBLFJ69X54348559702
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?51OBLFJ69X54348559702
Aug 13, 2025
Michael weaver
5 out of 5 stars review

Seller Verified Purchase

The liner arrived very quickly. I think two days after I placed the order the directions were good. The liner went on just the way it should've I believe. Got it filled with water and enjoying the pool. Thank you for your quick service and quality product.

Review from poolsupplies.com
Helpful?51OBLFJ69X54348559702