Smartline 18 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
Condition: New
Buy Now, Pay Later
As low as
$42.50
/ mo
Learn more
- – 6-month term
- – No impact on credit to apply
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, Affirm, Afterpay, Apple Pay, and PayTomorrow. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
Selected Option
Free shipping on this product
30-day returns
Learn more
30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Availability:
In Stock.
Arrives
Jun 10 – Jun 14
Recently Viewed
Material Type: 25 Gauge
Size: 18' Round
Features
- 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.
- 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 pools 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.
Package Dimensions: 24 x 14 x 5 inches
Manufacturer: Swimline
Item model number: A171848AJ
Is Discontinued By Manufacturer: No
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Jun 10 – Jun 14
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.
Similar Products
![[PATENTED] POOLHACKER 2026 Upgrade 2 Sets Poolside Storage Basket - Original Above Ground Pool Accessories, Swimming Pool Storage Basket with Pool Cup Holder, Poolside Storage to Organize Cup Towel](https://m.media-amazon.com/images/I/817z1lzfULL._AC_US500_.jpg)
Top Amazon Reviews
Material Type: 25 Gauge
Size: 24' Round
I recently purchased this 24-foot round pool liner to replace the old one in my above-ground pool, and after a few weeks of use, I’m generally pleased with the product. Here’s a breakdown of the pros and cons: Pros: Perfect Fit: This liner fit my 24-foot round pool exactly as expected. It’s made to be a snug, custom fit, and the measurements matched up perfectly with the dimensions provided. Installation was relatively straightforward, especially with a helper. Durable Material: The liner feels thick and durable. After a few weeks in the pool, I haven’t noticed any issues with tears or thinning, even with the sun exposure and chemical treatments. It seems like it will hold up well over time. Nice Design: The liner has a classic blue design with a clean, crisp look that brightens up the pool. It gives the pool a fresh and inviting appearance. The print is vibrant and hasn’t shown signs of fading despite being in full sunlight. Good Value for Money: Compared to other liners I’ve looked at, this one offers a good balance of quality and affordability. It’s priced competitively, especially considering the size and quality of material. Resistant to Chemicals: After using it for a few weeks, the liner seems to handle pool chemicals well. There’s been no discoloration or damage from chlorine or other standard pool treatments. Cons: Installation Can Be Challenging: While the liner fits well once in place, getting it into the pool was a bit tricky. It requires careful stretching and adjustment to avoid wrinkles or bunching, and a second pair of hands definitely helps during installation. Liner Color Can Fade: While the print looks great now, I’m concerned about how it might hold up over time with constant exposure to sunlight and pool chemicals. I’ve had some liners in the past that faded faster than expected, so I’m hoping this one proves more resistant. Conclusion: This 24-foot round pool liner is a solid choice for those looking to replace their existing pool liner without breaking the bank. It fits well, looks great, and seems durable enough for regular use. While installation can be a bit tricky and the material isn’t as thick as some premium options, it offers excellent value for money and should last for a few seasons with proper care. Overall, I’m happy with the purchase and would recommend it to anyone with a similar-sized above-ground pool.
...
show more
Reviewed in the United States on November 9, 2024 by Misty Ingram
Material Type: 30 Gauge
Size: 24' Round
Great DIY pool liner replacement! Good Value! It's still good a year later! No leaks! It looks great and It seems thick & durable enough that it should be around for years to come. It was less than half of what the local stores cost, so I am very pleased with the purchase. You should have a general knowledge of how to install a liner. If not, make sure to watch several instructional videos. It is NOT as easy as it looks and it does generally take more than one person.
...
show more
Reviewed in the United States on July 14, 2025 by Uwood2
Material Type: 30 Gauge
Size: 18' Round
Good fit. Nice quality.
Reviewed in the United States on April 17, 2026 by Judy Gonzalez
Material Type: 30 Gauge
Size: 16' x 32' Oval
This pool liner is amazing! The thickness, precise fit, and detail of the print is amazing! We put it in ourselves and it is beautiful. Thank you!
Reviewed in the United States on April 5, 2026 by pam schiehl
Material Type: 25 Gauge
Size: 15' x 30' Oval
Really good quality liner. Thick vinyl. Vibrant colors. Reasonable price.
Reviewed in the United States on July 12, 2024 by Brad I.
Material Type: 25 Gauge
Size: 24' Round
Very nice . Was easy to work with & love the design.
Reviewed in the United States on December 6, 2025 by kim
Material Type: 30 Gauge
Size: 33' Round
If I could give zero stars I would. I bought the pool liner last summer, it hasn’t been a year, I purchased the thickest one available spent $700 on it, when I took the cover off this year the top portion all around where the water doesn’t reach is completely dry rotted. This company is not willing to replace. It’s clearly cheap and not worth the money I put into it. Picture attached.
...
show more
Reviewed in the United States on April 2, 2026 Reviewed in the United States on April 2, 2026 by patrizia
Material Type: 25 Gauge
Size: 18' Round
This liner is installed and beautiful. The installers did an amazing job. Not a wrinkle.
Reviewed in the United States on March 25, 2026 by Loosearrow