dog doors for sliders

dog doors french doors

dog doors in walls

Dog Door Installation Denver 

and Colorado Springs

Quality Dog Door Installation services

In Glass Dog Doors

best dog door for sliding glass door

Patio sliders are often the best place for a Pet Door.  We use your current door and order a new piece of glass with a notch cut into it. The slider is able to open fully and lock correctly. The Double Flap Dog Door provides a reliable weather seal. 

contact us for a in glass quote

Pet doors installed through Walls or Doors

dog door wall

We provide quality installations in any type of wall material or through all types of Human doors. We have access to over a dozen manufactures products and are not obligated by any franchise agreement. This allows us to listen to the customer and to try and get the best product for the pet.

Contact Us for a wall or door quote

Electronic Collar Controlled Dog Doors

electronic dog door through the glass

 We love our pets and we believe that each pet is unique and has its own needs and habits, that is why our pet doors come in different sizes and offer convenient features such as adjusting the distance when the door opens and closes, and the time the door remains open to make your pet feel comfortable using the pet door. A dog door or cat door gives both the owner and his dog more freedom. The dog or cat can go in and out of the house at will, giving the owner more flexibility in his schedule, and no more rushing home to let pets out! 

Contact Us for a electronic dog door quote

doors and sliders with dog doors built in

We Sell Sliders with Dog Doors professionally Installed


Interested in replacing your worn out slider? Call us and we can help. We can sell you a slider for Do It Yourself install or we can offer a professional installation.

contact us for a quote to change out your patio slider

Doors with Dog Doors Built in

dog door built in

We sell Swing Doors with dog doors for Do It Yourself installation. Save the existing door for the landlord or the next homeowner. High Quality Dog Door installed into a Steel or Fiberglass door. We can also offer professional installation for Swing Door.

contact us for a door upgrade quote

High Quality Patio Door Inserts

dog door inserts

 Lets you install a pet door without any permanent changes to your home. Due to the spring loaded top, no tools are required for a fast and easy installation. The dual-paned glass combined with the energy efficient pet door flap, is the best option for installing a pet door in extremely hot or cold weather. 

contact us for insert pricing

Why Choose Dog Door Guy?

More Brands and Style Options for your Pet


Dog Door Guy finds the best solution for you and your pet. We are not limited by franchise agreement to push any brand or type of Dog Door.                                                           We listen to you and then offer many choices. 

Personalized Customer Service


  • Respect our customers time
  • Take the time to listen to your needs and concerns 
  • We do what we say we will do
  • We look out for your special needs dogs and can provide special options

Professional Quality Results


All we do is Dog Doors. We are focused on providing quality Dog Doors and installation. Glass companies or your favorite Handyman cannot provide the multiple options,expertise and training required to insure your pets quality of life and safety.

We want to be your first choice for dog door installation in Denver and Colorado Springs.

security options- ramps-steps-collar or chip pet doors

Brand Comparison

Security Boss

One of our Best sellers

  • In Glass Option. Wall and Door models
  • 11 Sizes and 11 Frame Colors
  • Double Flap with Locking Cover
  • 6 Year Warranty on Parts

Find out more

Hale Pet Doors


  • In Glass Option. Wall and Door models
  • 11 Sizes and 4 Frame Colors
  • Double Flap with Locking Cover
  • 5 Year Warranty on Parts and Labor
  • The inventor of the Double Flap Dog Door. 

Find out more

Endura Flap Dog Doors


  • In Glass Option. Wall and Door models
  • 4 Sizes and 2 Frame Colors
  • Double Flap with Locking Cover
  • 15 Year Warranty on Parts
  • Wind Resistant to 50 mph
  • Flaps are U.V. Resistant
  • Flap operates on Hinge (longer lasting)
  • Some Cats Can't open the Larger Models flaps*
  • Adjustable Magnets

Find out more

JGM Pet Doors


  • In Glass Option. Wall and Door models
  • Double flap with locking cover
  • 9 Sizes and 3 Frame Colors
  • 5 Year Warranty on Parts
  • This dog door is heavy duty

Find out more



  • In Glass Option. Wall and Door models
  • 4 Sizes and 3 Frame Colors
  • Double Saloon Style Doors with Locking Steel Cover 
  • 10 Year Warranty on Parts
  • Electronic Model avalable

Find out more

Hi Tech Electronic Dog Doors


  • In Glass Option. Wall and Door models
  • 2 Sizes 
  • 1 year warranty

Find out more

Financing available through Pay Pal

Contact Us

Easy to get information and Pricing.

Serving Denver and Colorado Springs

We love our customers, so feel free to call during normal business hours. 

Dog Door Guy, Inc.

Colorado, United States

(720) 515-4211 (719) 357-9116



9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm


9:00 am – 5:00 pm