20149, Ashburn, VIRGINIA
Functional, Classy

Replacement Sliding Glass Pet Doors

Sliding glass pet doors are integrated into your existing sliding glass door, allowing pets to come and go freely without compromising your home’s style or energy efficiency. Designed with a secure, weather-resistant panel and a locking mechanism, they offer convenience for pet owners while maintaining seamless indoor-outdoor access and preserving natural light.

BUY NOW! PAY LATER!

60 Months Interest Free.
$2,500 OFF
With Purchase of 10 Windows.

*expires 12/31/25

GET $2,500 OFF YOUR WINDOWS FOR A LIMITED TIME

Let every family member enjoy your sliding glass door.

Advanced Window Product makes life easier for pet owners by providing a replacement sliding glass pet door that replaces the entire door. This means that pet owners can begin enjoying benefits of their dogs and cats being able to let themselves out at all times of the day and night. The energy-efficient design of the replacement sliding glass pet door allows you to leave the pet door open. If you need to keep pets inside, a simple door insert helps “lock” the door. Advanced Window Product is the manufacturer, not the dealer; this means there is no “middle man mark-up,” producing immediate savings for the consumer. If you interested in replacing your existing patio door with a sliding glass pet door, contact Advanced Window Product today!

Before and After Pet Door

Who Can Benefit from a Replacement Sliding Glass Pet Door

 

The replacement sliding glass pet door is ideal for many kinds of animal lovers. For those who cannot easily make it up and down the stairs, the pet door allows the animal to let himself out as many times as necessary, thereby reducing the risk of the owner falling down the stairs. The replacement sliding glass pet door is also ideal for those working long hours. Pets benefit from consistency, such as being able to relieve themselves outside at set times. That is difficult for those who are away from home late into the day, resulting in messy accidents–a risk that only grows as the dog gets older. Fortunately, the replacement sliding glass pet door allows pet owners to work those long hours with the peace of mind knowing they won’t come home to any nasty surprises. Speaking of surprises, one of the greatest joys of buying this replacement sliding glass pet door is that your pets no longer wake you up in the middle of the night to take them outside!

Read more benefits of our sliding glass pet doors here

Sliding Glass Pet Door Features

 

Pet-Door_Measuring-Tips_CTA-500x391Make no mistake: this is no simple pet door. The energy efficient glass used on the replacement sliding glass door provides amazing insulation. Our Sliding Glass Pet Door helps owners have the convenience of pets letting themselves in and out throughout the day and the convenience of keeping energy costs down. The door frame itself is energy efficient, increasing thermal efficiency with an exterior that is extremely resistant to sun damage and other weather effects. Even the door flap is energy efficient; the Endura flap helps increase efficiency and seals via magnetic strips as soon as the pet enters or leaves the home! The best part about all of this energy efficiency is that it doesn’t obstruct the view: in fact, this design maximizes your view of your own beautiful yard. If you want a replacement sliding glass pet door that you and your pet will both love, contact Advanced Window Product today!

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Serving The Intermountain West

Our Service Area

  • Utah
  • Arizona
  • Idaho
  • Oregon
  • Washington

The Advanced Windows Difference

Us vs Them


Why Choose Advanced Windows? Compare Us to the Competition

The Difference Us Them
Lower Pricing
Factory-direct pricing direct to consumer
Middleman markups that drive up price
Better Warranty
Fully inclusive lifetime warranty
Limited warranty with expirations and exclusions
Quality Installation
Certified, in house Installation Masters
Outsourced, inconsistent subcontractors
Full Customization
Built to order for a perfect fit
Standard sizes forced to fit
The Best Service
Local, personalized customer care
Call centers and corporate runaround

Us
Factory-direct pricing direct to consumer
Them
Middleman markups that drive up price

Us
Fully inclusive lifetime warranty
Them
Limited warranty with expirations and exclusions

Us
Certified, in house Installation Masters
Them
Outsourced, inconsistent subcontractors

Us
Built to order for a perfect fit
Them
Standard sizes forced to fit

Us
Local, personalized customer care
Them
Call centers and corporate runaround

Reviews

Lane Gray AvatarLane Gray
Jordan was awesome! He thoroughly explained the window products and the installation process. It’s a pleasure doing business with Advanced Window Products. - 11/21/2025 
Christy Bowen AvatarChristy Bowen
From ordering to install... the whole process was fast, efficient and friendly with no pressure like you receive with so many other companies out there. What a difference our new windows have made with regulating the temperature in our house. We love our new windows. These guys are awesome and would definately recommend for anyone looking to replace their windows. - 11/19/2025 
Callen Crenshaw AvatarCallen Crenshaw
We are so happy we went with Advanced Windows for our window project! The windows are a huge upgrade from our previous ones. They got all of the windows installed in one day. We will be recommending Advanced to our friends. - 11/17/2025 
Chris Peery AvatarChris Peery
Our experience with Advanced Window Products was fantastic! Cassidy, our sales representative was knowledgeable, efficient and everything she said was accurate. The price was well below other estimates we had received but the windows were as good quality if not better and built in Arizona as well. Mario, Martine and Ernesto were incredibly efficient and professional. The old windows were removed and they repaired any casings that were missing as well. Everywhere they worked was left spotless as were the windows. The windows fit like a glove. We cannot say enough about our experience and suggest everyone looking at windows call Advanced Window Products first before making your decision. We are delighted!! - 11/17/2025 
Lanny Badten AvatarLanny Badten
I've been thinking about replacing my windows for awhile now but never quite got around to it. I was in a customers (I'm a handyman) home a few days back and noticed just how much nicer it felt in there since they had replaced their windows with the new energy efficient glass. A few days later a young man came to my door and gave me his sales pitch. Usually I just send them on their way, but somehow I liked his demeanor so I heard him out. Then after talking motorcycles for a bit, I agreed to meet with one of their sales reps. They called the next day and set up and appointment. At the appointed time Cassidy King came by and walked me through how their windows are manufactured and how she would take measurements of all of my windows and then give me a price that would be out the door so to speak. After that they would send out a fellow to take very accurate measurement and then they would build them custom fit to my home. When the build was complete (only a week or two as I recall) they set an installation appointment. Five guys showed up and went to work, positioning each window at the correct place it needed to be. Then they started removing the old windows and then installing the new. Having been in the trades for so many years, I watched them install that first window from start to finish. I was so relieved to see that they did it exactly as I would have done it myself. These five guys worked like a well oiled machine and each one knew exactly what his job was and they did it. It wasn't until they had cleaned everything up that they called it a day.At the end of the day all of the windows had been installed and the difference was felt immediately noticed. I no longer hear the cars that use my street and the F-35's flying overhead are now hardly noticeable. The next day a crew of two came back and trimmed everything out on the inside making everthing look great. I'm now on my third day of enjoying them and I notice that my A/C unit is cycling much less often then it was. Although I don't think I will need it, the lifetime warranty is a nice thing too! - 11/13/2025 
Ayrica Stoneman AvatarAyrica Stoneman
We love our doggie for insert! Chris and his crew did an amazing and quick job of installing. Easy process from start to finish! - 11/11/2025 
Kenny Dahl AvatarKenny Dahl
A Pleasure to work with from start to finish. Ordered my windows in the late summer from Ken and recently had them install by Don & his crew. They did all 11 in 1 day. - 11/11/2025 
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BUY NOW! PAY LATER!

60 Months Interest Free.
$2,500 OFF
With Purchase of 10 Windows.

*expires 12/31/25

GET $2,500 OFF YOUR WINDOWS FOR A LIMITED TIME