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Top 9September 2025

Best 21 Foot Round Pool Liner Overlap

We made a list of the top 9 21 Foot Round Pool Liner Overlap based on verified reviews, popularity and other factors which we summarized for you in this list.

Best Choice

Pureline 21' Round Aqua Matrix Overlap Above Ground Pool Liner, 48" - 52" Wall, Standard Gauge

Pureline 21' Round Aqua Matrix Overlap Above Ground Pool Liner, 48" - 52" Wall, Standard Gauge

✓Designed for pools with wall heights of 48” & 52”.
✓Made with premium Virgin Vinyl for maximum protection from pool chemicals and the sun’s harmful U.V. rays.
✓Product Specifications – Pool Size 21', Pool Shape Round, Wall Height 48-52 inches, Style Overlap, 32mm thickness
✓Overlap pool liner secured in place by Plastic Coping Strips (Sold Separately)
✓Standard Gauge Liner: .32 mm

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Smartline 21 ft Round Swimming Pool Liner | Boulder Swirl | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Boulder Swirl | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Boulder Swirl 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 - Blue rocks top the swirling water backdrop with the Boulder Swirl pattern. 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.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Boulder Swirl liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or wide-mouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks.

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18% Discount

Aqua Coastal Bali Overlap Round Above Ground Pool Liner, 48"-54" (21')

Aqua Coastal Bali Overlap Round Above Ground Pool Liner, 48"-54" (21')

✓Made from 100% virgin vinyl material and a standard 20 GA thickness

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Smartline 21 ft Round Swimming Pool Liner | Waves of Poseidon | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Waves of Poseidon | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Waves of Poseidon 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 - Tile designs of interchanging navy and sky blues roll like waves at the top of this beautiful Waves of Poseidon pool liner print. 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.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Waves of Poseidon liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or wide-mouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks

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Swimline LI214820 21 Foot Solid Blue Round Above Ground Swimming Pool Overlap Liner 20 Gauge Vinyl Liner for 48 to 52 Foot Pool Walls

Swimline LI214820 21 Foot Solid Blue Round Above Ground Swimming Pool Overlap Liner 20 Gauge Vinyl Liner for 48 to 52 Foot Pool Walls

✓Elevates The Appeal Of Your Pool: Durable and sleek, this overlap liner provides robust protection, safeguarding your round above-ground pool from potential damage and wear
✓Premium Coating: Constructed from sturdy 20-gauge virgin vinyl, this high-quality liner provides a durable outer coating for hard sided above-ground pools
✓Longevity-Focused Material: Insulated against chemicals and fading, the pool padding ensures long-lasting durability for years of reliable and enjoyable use
✓Hassle-Free Stitching: Robust seams guarantee longevity, offering a dependable shield for your swimming pool against the elements for worry-free, lasting protection
✓Accurate Sizing: Designed to accommodate pool sidewalls of both 48 and 52 inches, please be aware that coping strips, sold separately, are necessary for the overlap liner

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Smartline 21 ft Round Swimming Pool Liner | Caribbean | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

Smartline 21 ft Round Swimming Pool Liner | Caribbean | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Vinyl | for Steel Sided Above Ground Pools | Gasket Kit Included

✓MEASURE TWICE, BUY ONCE – Whether installing for the first time, or replacing an existing liner, the Caribbean 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 - The Caribbean pattern gives a delightful depiction of exotic fish swimming around your pool. 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.
✓NO TROUBLE TO INSTALL - Overlap liners are draped over the walls of the pool during the installation process. Once the bottom seam is even near the cove, the liner is ready to be secured. This material is held in place through the use of coping strips prior to putting the top rails back onto the pool. Bead receivers are not needed for this type of liner. The liner is made to work with pools which have a flat bottom and wall heights of 48” or 52”. ***Will not work with Pop-Up pools***
✓STAY COOL IN THE POOL – Enjoy the warm weather while spending quality time with family and friends. Your backyard aboveground pool will surely become the place to be during those hot summer days. Stay cool in more ways than one with the Caribbean liner.
✓UNIVERSAL GASKET SET - The included kit is for the pool’s skimmer and return. This skimmer gasket will work with either standard sized skimmers or widemouth versions. These pieces will help prevent corrosion of the pool wall and should be replaced each time a new liner is installed as they become dry over time which could cause leaks.

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19% Discount

Blue Wave Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Solid Blue Finish, Fits 48/54-In Depth – Pool Accessories

Blue Wave Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Solid Blue Finish, Fits 48/54-In Depth – Pool Accessories

✓ABOVE-GROUND ROUND POOL LINER – Swimming pool liners set the tone for the entire pool. This vibrant, solid-blue overlap liner delivers a smooth finish and classic style, ideal for both new installations and liner replacements.
✓PREMIUM VINYL CONSTRUCTION – Crafted from flexible, standard-gauge vinyl that resists punctures and abrasions, this above ground pool liner offers reliable strength and performance for everyday swimming season after season.
✓WEATHER-RESISTANT FOR COLOR RETENTION – Built-in inhibitors on sun exposure help protect these above ground pool liners from harmful sunlight and pool chemicals, reducing fading and deterioration over time to maintain their vibrant appearance.
✓FAST, FLEXIBLE INSTALLATION – The overlap design of these pool liners for above ground pools provides a secure, forgiving fit that simplifies setup. Ideal for a range of pool shapes with steel walls and 48 to 54-in depths.
✓LONG-LASTING, WARRANTY INCLUDED – Blue Wave’s welding process ensures the liner has smooth, durable seams for ultimate protection against seam failure for years to come. Backed by a 15-year limited warranty. Available in 8-ft to 30-ft round sizes.

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Blue Wave Evening Bay Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

Blue Wave Evening Bay Overlap 21 ft Round Pool Liner for Above-Ground Steel Wall Pools – Weather Resistant Standard Gauge Vinyl with Welded Seams - Dark Blue, Fits 48/54-In Depth Walls

✓ABOVE-GROUND ROUND POOL LINER – Swimming pool liners set the tone for the entire pool. The Evening Bay liner features deep blues, with light blue highlights that create shimmering water-like effects. Ideal for new installations and replacements.
✓PREMIUM VINYL CONSTRUCTION – Crafted from flexible, standard-gauge vinyl that resists punctures and abrasions, this above ground pool liner offers reliable strength and performance for everyday swimming season after season.
✓WEATHER-RESISTANT FOR COLOR RETENTION – Built-in sun inhibitors help protect these above ground pool liners from harmful sunlight and pool chemicals, reducing fading and deterioration over time to maintain their vibrant appearance.
✓FAST, FLEXIBLE INSTALLATION – The overlap design of these pool liners for above ground pools provides a secure, forgiving fit that simplifies setup. Ideal for a range of pool shapes with steel walls and 48 to 54-in depths.
✓LONG-LASTING, WARRANTY INCLUDED – Blue Wave’s welding process ensures the liner has smooth, durable seams for ultimate protection against seam failure for years to come. Backed by a 15-year limited warranty. Available in 8-ft to 30-ft round sizes.

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LINERWORLD.COM 21' Round Pool Liner for Overlap or Beaded Above Ground Swimming Pools - 25 Gauge Heavy Duty Vinyl

LINERWORLD.COM 21' Round Pool Liner for Overlap or Beaded Above Ground Swimming Pools - 25 Gauge Heavy Duty Vinyl

✓Fits 21' Round Above Ground Pools - Choose Overlap or Beaded x 52"
✓Overlap fits up to 54" deep, Beaded fits 52" depth. Overlap requires Coping for Installation, Beaded requires Bead Receiver
✓25 Gauge High Quality Virgin Vinyl
✓Chemically Treated to Resist UV Ray - Fade Resistant
✓Comes with a 25 year limited prorated Warranty for Manufacture Defects

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