SmartLine 21' x 41' Oval Coastal Rock Overlap Above Ground Swimming Pool Liner, 54" Height , 25 Gauge
SmartLine 21' x 41' Oval Coastal Rock Overlap Above Ground Swimming Pool Liner, 54" Height , 25 Gauge
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SmartLine 21' x 41' Oval Coastal Rock Overlap Above Ground Swimming Pool Liner, 54" Height , 25 Gauge

SmartLine 21' x 41' Oval Coastal Rock Overlap Above Ground Swimming Pool Liner, 54" Height , 25 GaugeSmartLine 21 x 41 Oval Coastal Rock Overlap Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Waterfall Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval River Slate Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Swirl Bottom Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Crystal Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Tidal Surge Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Seaside Lagoon Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Boulder Swirl Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Waves of Poseidon Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Swirl Tile Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Antilles Dolphin Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Rock Island Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Boulder Swirl Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Solid Blue Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Swirl Tile Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Tidal Surge Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval River Slate Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Cracked Glass Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Antilles Dolphin Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Caribbean Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Sunlight Above Ground Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Boulder Swirl Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Seaside Lagoon Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Bedrock Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Sunlight Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Waves of Poseidon Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Solid Blue Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Waterfall Overlap Above Ground Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Waves of Poseidon Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval River Slate Overlap Swimming Pool Liner 54 Height 25 GaugeSmartLine 21 x 41 Oval Caribbean Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Waves of Poseidon Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Solid Blue Overlap Above Ground Swimming Pool Liner 48 52 Height 30 GaugeSmartLine 21 x 41 Oval Waterfall Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Waterfall Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Boulder Swirl Overlap Above Ground Swimming Pool Liner 48 52 Height 30 GaugeSmartLine 21 x 41 Oval Boulder Swirl Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Oval Tidal Surge Overlap Above Ground Swimming Pool Liner 48 52 Height 25 GaugeSmartLine Overlap Liner for 21 x 41 Oval Swimming Pool 48 52 Height 25 Gauge Rock IslandSmartLine 21 x 41 Oval Bedrock Overlap Above Ground Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Swirl Bottom Overlap Swimming Pool Liner 48 52 Height 25 GaugeSmartLine 21 x 41 Round Coastal Rock Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Solid Blue Overlap Swimming Pool Liner 48 52 Height 20 GaugeSmartLine 21 x 41 Oval Tidal Surge Overlap Above Ground Swimming Pool Liner 54 Height 20 GaugeSmartLine 21 x 41 Oval Cracked Glass Overlap Above Ground Swimming Pool Liner 48 52 Height 20 Gauge
Gauge:25
Pattern:Coastal Rock
Assembled Product Height:54

Key item features

  • SmartLine 21' x 41' Oval Coastal Rock Overlap Above Ground Swimming Pool Liner, 54" Height , 25 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
  • 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
Current price is $679.99
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Arrives by Wed, May 20
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Sold and shipped by Four Seasons Pool SupplyPro Seller
4.217577706323687 stars out of 5, based on 1866 seller reviews(4.2)
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Customer ratings & reviews

4.8 out of 5 stars
stars261 ratings183 reviews
How item rating is calculated
  1. 5 stars82% (215)
  2. 4 stars13% (34)
  3. 3 stars4% (11)
  4. 2 stars0% (0)
  5. 1 star0% (1)
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Showing 1-3 of 183 reviews

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?53M04DHI6O3Q895398908
Apr 3, 2026
Michael McDonald
5 out of 5 stars review

Seller Verified Purchase

It's been many years since I last bought a liner for our 18 ft. Round aboveground pool. You guys were very quick in shipping my order. Received everything no damage boxes. I can't wait to install it in late April to early May. Would love to tell you more about that timeline. Thanks.

Review from poolsupplies.com
Helpful?53M04DHI6O3Q895398908
Jul 12, 2025
Laura Maldonado
5 out of 5 stars review

Seller Verified Purchase

My experience so far has been very good. I haven't installed the new liner yet as we are doing it this weekend. I will say this is the second liner I had to buy. I've only had my Pool three years after the first year there was a leak in the sea it was covered under warranty, so they sent me a new one then this year in the exact same spot and directly across from it on the other side of the pool in the same spot, there was another leak in both sea. I paid for a new liner because I wanted a stronger one which I received a 30 gauge and that's what I ordered. I'm keeping my fingers crossed that this is the last time I have to replace a liner at least for 10 years, but I will say overall my experience has been very good. I will let you know how it goes after this liner has been installed.

Review from poolsupplies.com
Helpful?53M04DHI6O3Q895398908