Flagstone Gray Borderless Premier Value Series GLI Inground Pool Liner 27 Mil

Flagstone Gray Borderless Premier Value Series GLI Inground Pool Liner 27 Mil

12' x 20' / 27 Mil
$803.03 USD
Sale price  $803.03 USD Regular price  $947.58 USD
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Flagstone Gray Borderless Premier Value Series GLI Inground Pool Liner 27 Mil

Flagstone Gray Borderless Premier Value Series GLI Inground Pool Liner 27 Mil

$803.03 USD
Sale price  $803.03 USD Regular price  $947.58 USD

Bring the timeless beauty of natural stonework to your pool with the Flagstone Gray borderless liner. Inspired by hand-cut flagstone, this realistic pattern features regular and irregular stone shapes in a variety of sophisticated gray hues.

Thickness27 Mil

Flagstone Gray Inground Vinyl Liner

Flagstone Gray Borderless Premier Value Series GLI Inground Pool Liner 27 Mil

This premium liner features a sophisticated Flagstone Gray colorway that brings natural elegance or natural cut flag stone and timeless charm to your swimming environment. Designed with GLI's borderless configuration, the liner provides a seamless, modern look that maximizes visual appeal and ensures a precise, custom fit. The 27 Mil thickness represents top-tier durability, offering exceptional resistance to punctures, UV rays, and chemical wear. Its borderless design eliminates traditional seam stress points, enhancing the liner's longevity and maintaining a sleek, uninterrupted appearance. The Flagstone Gray tone creates a tranquil, natural ambiance that transforms your pool into a serene backyard retreat. Engineered for easy installation and long-lasting performance, this GLI pool liner combines aesthetic elegance with professional-grade construction. Whether you're upgrading an existing pool or completing a new installation, the Flagstone Gray Borderless Liner delivers both style and substance, promising years of beautiful, worry-free swimming experiences.

Ordering Steps

  1. Select your pool size and any additional features & place your order to secure our current sale price.
  2. Watch for a follow-up email from Info@NationalDiscountPoolSupplies.com with your next steps.
    1. This email will include available forms to complete with your pool specifications and information on where to send them. 
    2. Production starts after receipt of an order along with signed off dimensions of your pool.  
    3. If you don't see the email within 24 hours, please check your spam folder or contact us directly.

Production time

Anywhere from 1-7 business days depending on the time of the season.

Warranty

20-Year Limited Warranty, 1-Year Full

Why buy from us?

  • Premium Virgin Vinyl: Crafted from the highest quality materials for lasting durability.
  • Made in Youngstown, OH: Proudly produced by GLI Pool Products.
  • Precision Fit: Engineered with advanced computer-aided design for a flawless installation.
  • Enhanced Seam Strength: Features G-fusion bonding technology for stronger, less visible seams.

Don't see your pool size or shape?  Click here to get your free quote!

Questions?  We're here to help! 

Important Notes:

  • The listed prices are for standard rectangular, oval, or grecian in-ground pools. To finalize your order, you must complete and sign a form detailing your pool's exact dimensions. Prices may be adjusted if measurements are corrected or new information is provided after the form is submitted.
  • All in-ground pool liners are special orders and are not eligible for return or refunds.

Additional Resources:

Frequently Asked Questions

How does the ordering process work?

Buying a custom liner is a simple 3-step process:

  1. Place Your Order: Select the size closest to your pool and complete the checkout.
  2. Submit Your Measurements: After checkout, you have two options:
    Download Forms: Click here to download our "Liner Measurement Form," fill it out, and email it back to us.
    Send Your Own: If you already have a spec sheet from a previous liner replacement or builder, you can email that directly to us at Quotes@ShopNDPS.com.
  3. Measure & Sign: Fill out the form with your pool’s exact dimensions and email it back to us.
  • Important: Production does not start until we receive your signed measurement form.
How fast will I get my liner?
  • Production Time: Once we have your signed and approved measurements, production typically takes 1–3 business days (depending on the season).
  • Shipping: After production, standard ground shipping usually takes 3–5 business days.

Note: April–June is our busiest season. Beat the rush and order ahead!

I don't see my pool shape

Do you have a kidney, L-shape or other freeform pool? Follow this link to get your free quote!

Where is this product manufactured?

This product is manufactured by GLI Pool Products. They manufacturer your personalized inground pool liner in Youngstown, Ohio! 🇺🇸

What is the warranty?
GLI Pool Products Warranty Info

Click here to view GLI's full warranty details

Standard Warranty: 25-YR Limited, 3-YRS FULL
(All patterns excluding Premier Value Series)

Premier Value Series Warranty: 20-YR Limited, 1-YR FULL

How much does shipping cost?

It is 100% Free. We offer free standard ground shipping on all orders over $74.99. Since InGround pool liners meet this threshold, you won't pay a dime for delivery within the contiguous U.S.

Customer Testimonial

Customer testimonial features the pool liner pattern Hampton with Seaglass.

Before image After image
During Install
After

"Great to work with. Very responsive and really helpful. Top notch quality as well. This was DIY and I saved tons of $$$."

Jerick C.

Don't see your pool size?

Contact us for your free and competitive quote by our experts!

Click here to get your quote!

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