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Through The Glass Dog Doors Logo
  • Serving Denver Colorado & The Front Range Since 2009!

(720) 369-4090

CALL US ANYTIME!

Get Your Free Estimate Today!

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PROFESSIONAL IN-GLASS DOG DOOR INSTALLERS

THE PERFECT PET DOOR SOLUTION FOR YOUR DOG!

Glass Dog Doors is Denver Colorado’s leading glass dog door and glass cat window installer. We served thousands of satisfied customers. Give us a call today or fill out our free estimate form and find out how inexpensive it is to get a custom glass dog door or cat window installed in your home today!

In Glass Dog Door Installation For Any Type Of Glass Door!

We Will Beat Any Competitors Price
Sliding Glass Dog Door With Dog Door In It

Sliding Glass Dog Door

A sliding glass dog door will keep one of the best features of your home while giving your dog the freedom to come and go.
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Storm Door With Dog Door In It

Storm Door Dog Door

A storm door with dog door offers your pet the freedom to come in and out, while still protecting your home’s integrity.
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French Door With Dog Door In It

French Door Dog Door

Keep the integrity of your beautiful French doors while still allowing your dog to come and go with a French door with dog door.
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Hale Pet Door Logo

Hale Pet Door

Hale Pet Door makes pet doors that fit right in-glass so you’re sure to get a dog door that’s best for your pet and fits your lifestyle. Security has been top of mind so rest assured that when you insert the security cover and lock it that your home is secure.

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Security Boss Dog Door

Security Boss Manufacturing LLC specializes in the production of the very best quality pet doors for both residential and commercial environments. Choose models that offer weather protection for even the most extreme environments, both hot and cold.

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Google Verified Reviews

Cannot begin to say how amazing this company and the owner, Jason, is. The installation was done with the upmost professionalism and highest quality. The installation process was quick and easy. Highly recommended! Best dog door business in Colorado hands down!
Michele Bruni
It's been several months now and I wanted to post to say how much we love our pet door. Jason was great to work with and the process was quick and very professionally done. Looking back we wonder how we ever got along without it. And I know our puppy is much happier now. Worth every penny. I highly recommend Through the Glass for anyone looking for a high-quality solution.
Scott Avant
We love our new doggie door! Jason was great to work with. We were needing to match tinted glass on our sliding door and had talked to a number of other companies who couldn't do it. Jason came through and the dogs love it. Worth every penny.
Shelley Maher
Jason was very responsive and helpful. He worked with our property manager to complete the work prior to our move in date so we had one less thing to worry about. Work was done timely and as specified.
Tom Frengillo
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Samples Of Our Work

We treat your house as if it were our own!