Search  for anything...

Smartline 18 ft Round Swimming Pool Liner | Waterfall | Overlap Style | 48-52 Inch Wall Height | 25 Gauge Heavy Duty Virgin Vinyl | Designed for Steel Sided Above Ground Pools

  • Based on 742 reviews
Condition: New
Checking for the best price...
$219.99 Why this price?
Save $30.00 was $249.99

Buy Now, Pay Later


As low as $36.67 / mo
  • – 6-month term
  • – No impact on credit
  • – 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, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. 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 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.
Fulfilled by Save More On Pool Supplies

Arrives Sep 13 – Sep 17
Order within 16 hours and 44 minutes
Available payment plans shown during checkout

Material Type: 25 Gauge


Color: Waterfall


Features

  • MEASURE TWICE, BUY ONCE Whether installing for the first time, or replacing an existing liner, the Waterfall 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 Intex or 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 Waterfall liner.
  • HIGH QUALITY MATERIAL - Swim care-free knowing your liner can tough it out through abrasion, chemicals and UV fading thanks to the use of Lamiclear technology. The layers are made of an acrylic top coat, a UV resistant print layer, and a 100% virgin vinyl base. This material is then welded and cut for a flawless fit and finish. A 25-year limited warranty is included protecting against defects in material and workmanship.

Package Dimensions: 25 x 14.5 x 6.5 inches


Item Weight: 46 pounds


Manufacturer: Swimline


Item model number: 171848BX


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sep 13 – Sep 17

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.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Great product.
Material Type: 20 Gauge Color: Boulder Swirl
Love it very easy to install and looks great.
Reviewed in the United States on May 20, 2025 by Matthew S. Matthew S.

  • Gorgeous
Material Type: 25 Gauge Color: Caribbean
Beautiful liner, really sparkles
Reviewed in the United States on July 8, 2025 by Cyndi DiManno

  • Liner is good quality
Material Type: 25 Gauge Color: Boulder Swirl
This is an excellent pool liner. Durable and relatively easy to install. Highly recommend adding wall foam for extra protection of the liner.
Reviewed in the United States on June 27, 2025 by Brenda M.

  • Good quality liner
Material Type: 25 Gauge Color: Cracked Glass
Great product for the money
Reviewed in the United States on July 20, 2025 by will snyder

  • Easy to install, Nice looks!
Material Type: 25 Gauge Color: Cracked Glass
Installed yesterday, was pretty easy! Put a vacume taped in the return hole and taped up the filter hole. Then have 1 person inside stretching and 1 person outside putting on top rail. The vacume will pull out the wrinkles and suck the liner to the pool walls. Fill with water to 6 inches before removing. This tricked worked wonders for us. Looks beautiful too! Hopefully it last awhile ... show more
Reviewed in the United States on April 4, 2020 by Mack & Alexis Graham

  • good product
Material Type: 30 Gauge Color: Boulder Swirl
very good liner and went in very easily
Reviewed in the United States on June 6, 2025 by Emily Hovestadt

  • This liner is Fantastik
Material Type: 25 Gauge Color: Cracked Glass
This liner came in fast!! We bought a 18 by 48 ft Intex pool about 5 years ago. The liner on this pool is the actual pool- wall and liner in one. So I bought this liner after months of debate. It works. I installed it and used some green house clips to secure it to the top bars of the Pool which also worked perfectly and the liner is in and it is AWESOME!!! We had to cut our own holes in the liner for the pump fittings.This liner did tear easily, lucky for us I noticed it right away. The clips are what tore it not us handling just the liner by our self. I do recommend this liner, it looks great and it works perfectly to fit our needs. Thank You Swimline! ... show more
Reviewed in the United States on June 20, 2018 by Laura Stone Laura Stone

  • Arrived with ~ 1 inch tear and was not the indicated size
Material Type: 25 Gauge Color: Cracked Glass
I ordered this in the winter so we’d have it ready to install as soon as it warmed up. That was a big mistake. We were initially able to get the liner attached to the pool walls but with minimal overlap, but when we started adding water we found a 1” tear in the bottom. After repairing the tear, we went back to adding water and it did not stretch enough and will not stay attached to the pool walls. You can tell it is the wrong size because the pattern on the liner, which should change near the waterline, changes less than halfway up the wall. Swimline claims a 25 year warranty but no one answers the phones or calls you back so we’re just out $250. If you are going to buy this, make sure you install it before the Amazon return period ends. ... show more
Reviewed in the United States on March 29, 2024 by Jennifer B.

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...