Product Information
Description
Blue Wave Solid Blue 21' Round Overlap Pool Liner
Clean, classic, borderless blue.
The Blue Wave Solid Blue 21' Round Overlap Pool Liner (NL325-20) gives your above-ground pool one bright, even shade of blue with no border, a simple and classic look for any backyard. It is made from 13 mil standard-gauge vinyl with UV inhibitors, sized for 21' round pools with 48 in to 54 in walls, and backed by a 15-year pro-rated limited warranty. PST SKU: PST-NL325-20.
Why PST Customers Pick This
Borderless Solid Blue
A single bright blue with no border gives your pool a clean, classic finish that pairs with any pool setup.
13 Mil Standard Gauge
The vinyl is 13 mil (0.32 mm) thick, the figure Blue Wave lists for its standard-gauge overlap liners.
Overlap Installation
The top edge folds over your pool wall and clips in place with plastic coping strips, so the wall needs no bead receiver. It fits walls from 48 in to 54 in tall.
Welded Seams
Wall and floor sections are joined with welded seams for a smooth finish. At installation those seams are centered on the cove at the base of the wall.
UV Inhibitors
UV inhibitors in the PVC vinyl help protect the solid blue color from sun fading.
15-Year Pro-Rated Warranty
Blue Wave warrants the liner against defects in material and workmanship for the original purchaser with a 15-year pro-rated limited warranty. The FAQ below explains how the pro-rated discount works.
Specifications
Frequently Asked Questions
Will this liner fit my pool?
It is made for 21' round above-ground pools with walls from 48 in to 54 in tall, including Blue Wave Martinique and Trinity pools in that size. Match the liner to your pool's size and shape before you order.
Are coping strips included?
No. An overlap liner folds over the top of the wall and is clipped in place with plastic coping strips, which are sold separately. Leave the liner loose on the wall at first and adjust it as the pool fills; pulling it tight overstretches the vinyl, and overstretching voids the warranty.
Can I install it myself?
Yes. The Blue Wave liner instructions walk you through it. Clear grass and roots from the pool area, spread a 2 in layer of mason sand, and form a 6 in cove of compacted sand or pre-formed foam around the base of the wall, with duct tape over the wall screws. Warm the liner in the sun, center it so the welded wall and floor seams fall on the cove, and clip the sides loosely with coping strips. Do not cut openings for a skimmer or return until the water is 3 in below each one.
How does the 15-year warranty work?
It is a pro-rated limited warranty against defects in material and workmanship, for the original purchaser, who must show proof of purchase such as a receipt. An approved claim earns a discount off the manufacturer's current price for the liner, counted from the original purchase date: the whole price in year 1, seven tenths of it in year 2, then stepping down on a set schedule to one tenth in years 11 through 15. Fading, printing irregularities and chemical damage are excluded, as are rips, tears or punctures from negligence, improper handling or installation, wind or ice. Shrinkage is not covered if the pool is emptied, labor and lost water or chemical costs are not covered, and the original purchaser pays all shipping charges, with any return authorized in advance.
Are wrinkles normal after filling?
Slight wrinkles can appear and are normal; they do not affect the warranty. Smooth the floor once there is about 1/2 in of water in the pool. For air trapped behind the liner, the instructions suggest running a vacuum hose through the skimmer opening while you work out wrinkles with short tugs on the liner.
Give Your Pool a Fresh Solid Blue Finish
Backed by the PST Pool Supplies team for sizing and installation questions.
Additional Info
| Category | Pool Products Pool Liners |
| SKU | PST-NL325-20 |
| MPN | NL325-20 |
| Manufacturer | Blue Wave |
| Weight | 52.0 lb |
Let customers speak for us
Great company to work with!
Came in great condition my kid loves it, fit perfect hes 6 and got a medium.
Order received. Thank you
This is a well built spa light with excellent cables and excellent customer service. Highly recommend
New flow switch worked perfect. Much cheaper than other sites. Arrived on time.
Good price works great!
Extremely fair company. Cares about their customers and are willing to do what it take to make you feel satisfied!
Dog chewed pool robot cord end. Ordered this fix it. Delivery was a little slow and I think some instructions should have been included as should have been a tiny allen wrench needed to tighten the wires into the plug. I got it done but think most homeowners would have a problem doing it. Other than these issues, the plug works fine and was much cheaper than buying a whole new cord.
Had a minor issue with pricing of a separate part in my order, but the sales team was responsive and reasonable, and worked with me to come to a mutually agreeable solution. In a world where character and reason has become the exception rather than the norm, they stand by their word and were committed to finding a fair solution.
I highly recommend them, and will look to them first in the future when searching for pool and spa products. Thanks, Sal and team!
I really like it
The part fit perfectly. Shipping was quick. Would definitely purchas from PST Pool Supplies again in the future.
Ordered this as I just had a leak and replaced it with a complete flow switch and valve . If the valve body cracks again, at least I am prepared. Thanks!
Awesome product and handling. It fit where my IC40 was easily.
We found the hard to find parts here, and they were delivered all the way to North Carolina way ahead of the initial delivery date. The pump runs Great and Everyone is enjoying the Pool over the Labor Day Holiday. Thank you again PST Pool Supply for your Excellent service..
Came here looking for a replacement flow switch and housing. My last one that I purchased on Amazon (cheap Chinese ****) lasted only 9mo before leaking severely in 2 places. I noticed a quality difference in the replacement I received from PST. I expect this one to far exceed the prior one. It installed quickly and works perfectly. Best of all, the leaked are gone.