Lifetime seam warranty
Therma-Seal seams are covered 100% for the life of the liner.
E-Z Clip Liners · 4000 Series
Doughboy E-Z Clip Liners
E-Z Clip liners snap securely into a matching E-Z Clip Receiver for a clean top edge and a wrinkle-free fit. Every E-Z Clip liner from Gordo's ships with the receiver you need to install it.
General Liner Info
Durable Design & Long-Lasting Performance
Doughboy's 4000 Series E-Z Clip liners are 20 MIL thick, made from 100% virgin vinyl with UV and chemical resistance, and built for above-ground pools with 48", 52", or 54" walls. The E-Z Clip system requires a compatible receiver that we include with every order.
100% virgin vinyl
No clay fillers and no reprocessed material, UV- and chemical-resistant.
True mil thickness
Measured in real mil, not the marketing "gauge" other brands use.
Warranty-safe fit
Genuine Doughboy parts so your pool warranty stays intact.
What you get with every ez clip liners
- 20 MIL thick vinyl construction for strength and durability.
- 4000 Series liner designed for long-term performance.
- 25-year manufacturer warranty for added peace of mind.
- Fits 48", 52", and 54" above-ground pool walls.
- E-Z Clip system installs into a compatible receiver, included with every order.
- Made from 100% virgin vinyl with UV and chemical resistance.
- Therma-Seal™ Technology, sealing technique that provides durability and supreme quality.
- Liner seams come with a 100% lifetime warranty.
- Pair with proper water balance and a quality underlayment for best long-term results.
2026 Patterns
Doughboy E-Z Clip Liners, Pattern Lineup
Browse every pattern currently available in this series. Stop by the Modesto showroom to see physical swatches and confirm the right size for your pool.
NewBlue Grotto
20 MIL · Full print on gray
Blue and gray stone-tile pattern for a natural, grotto-inspired look.
Evening Star
20 MIL · Full print on white
Geometric star border over a soft blue marble base.
Terrazzo
20 MIL · Full print on gray
Stone-wall border with a speckled gray floor texture.
Triton
20 MIL · Full print on white
Blue and white diamond tile border over deep blue marble.
Note: pattern colors on screen are a guide only, actual liner color and texture may vary slightly between print runs.
Gauge vs. Mil
The Most Confusing Number In The Above-Ground Liner Aisle, Explained
"Gauge" is a marketing term. "Mil" is a real measurement. Before you spend money on a replacement liner, here's exactly what the numbers mean, and why a true mil-rated Doughboy liner is almost always thicker than the gauge number on a competitor's box.
Mil is a real measurement
One mil equals 1/1000 of an inch. A 20 mil liner is exactly 0.020" of vinyl, the same on every box, from every manufacturer. When Doughboy says 20 mil or 25 mil, you can put a caliper on it and prove it.
Gauge is a marketing term
"Gauge" has no fixed conversion to a physical thickness. Manufacturers use it to make thinner vinyl look thicker on the shelf, and in many cases, "30 gauge" is only "approximately 15 mil." It also lets them use thinner vinyl on the floor than on the wall.
Industry "Gauge" vs. actual thickness in mil
Approximate conversions reported by liner manufacturers and the broader plastics industry. Numbers vary by brand, always ask for the actual mil thickness in writing.
| Marketed gauge | Wall (actual mil) | Floor (actual mil) | What it really means |
|---|---|---|---|
| 20 Gauge | ~11–13 mil | ~12 mil | Marketed as the "standard" but is the thinnest vinyl on the market. |
| 25 Gauge | ~14–15 mil | ~13 mil | Often sold as an "upgrade", still thinner than a true 20 mil Doughboy liner. |
| 30 Gauge | ~15–17 mil | ~15 mil | Frequently described as "approximately 15 mil" in the fine print. |
| 35 Gauge | ~18–19 mil | — | Thickness and floor weight vary by manufacturer. |
| 40 Gauge | ~20–22 mil | — | Top of most gauge charts, still no guaranteed floor thickness. |
Source: published manufacturer charts and the U.S. plastics-film convention that 100 gauge = 1 mil. Pool-liner "gauge" is not the same scale, which is exactly the confusion this chart exposes.
What Doughboy actually delivers
Doughboy is the only above-ground pool brand that manufactures its own vinyl, in true mil thickness, with the same gauge on the wall and the floor, backed by the Therma-Seal lifetime seam warranty.
| Series | True thickness | Warranty |
|---|---|---|
| Overlap 4000 / E-Z Clip 4000 | True 20 mil wall and floor | 20–25 year limited warranty |
| Overlap 5000 Expandable | True 25 mil wall and floor | 30 year limited warranty |
| Therma-Seal seams | Heat-welded virgin vinyl | Covered 100% for the life of the liner |
Why people buy their liner at Gordo's
- We quote in mil, not gauge. You'll always know the real wall and floor thickness before you pay.
- Authorized Doughboy dealer since 1956. Liners are sourced from the factory with the matching receivers, hardware, and warranty paperwork.
- We protect your pool warranty. A non-Doughboy liner voids the pool warranty, we make sure that does not happen by accident.
- Central Valley measurements done right. We confirm shape, wall height, attachment style, and bottom type so the liner fits the first time.
- Local support after the sale. A real phone number, a real store at 6167 Yosemite Blvd, and trusted installer referrals.
Pro tip from our liner desk: if a competitor will not give you the actual mil thickness of the wall and the floor in writing, assume the floor is thinner than the wall. Then compare that number, not the gauge, to a true 20 mil or 25 mil Doughboy liner.
Made in America for over 75 years
American-Made, Backed By A 1956 Modesto Dealer
Doughboy has been an American manufacturer since 1947, with roots that trace back to the World War I sealing techniques used to package rations for the American "Doughboys." Every pool, liner, and component is engineered and built in the United States, supporting American jobs and backed locally by Gordo's Pool City since 1956.
Customer Reviews
What Central Valley pool owners say about Gordo's
Verified Google reviews from neighbors who trust Gordo's Pool City with their liners, equipment, and water chemistry.
4.2 on Google · 82+ reviewsPaul Smith
Modesto, CA · Jan 2023
Google Review“I have known John for quite some time now. He is the “pool guy.” He and his staff know their stuff about pools and pool care, as well as spas. As long as he is in business, he will have my business.”
Charles Morales
Modesto, CA · Jan 2024
Google Review“They are right there explaining step by step how to complete the work.”
Rebecca Lux
14-year customer · Jun 2019
Google Review“Gordo's has everything!!! Plus their clerks have the pool knowledge I needed. If they didn't know they'd turn you over to the owner or someone with more experience. It's the only place I'll go and feel at ease about what I'm buying. 14-year customer, I give you a 5 star ☆☆☆☆☆.”
Liner Quote
Request a EZ Clip Liners for your pool.
Pick the pattern you like and share your pool measurements. We'll confirm the right fit and the right hardware before you order.
Frequently asked questions
EZ Clip Liners, Frequently Asked Questions
Common questions about Doughboy ez clip liners, fit, warranty, and installation in the Central Valley.