Quality dog doors installed through
through walls or doors

Dog Door Guy was created to give our customers the best choices in Quality Pet Doors. We find the best option for your pet.  

Our Services

best dog door for sliding glass door

In Glass Dog Doors

Patio sliders are a great place for a Pet Door. We replace the glass to manufactures specification to allow the pet door to go through the glass. Many of our customers replace the insert panels that allow cold air in and restrict the opening for humans. The glass is saved intact and can be used to remove the dog door if needed.

dog door wall

Pet doors installed through Walls or Doors

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.

electronic dog door through the glass

Electronic Collar Controlled Dog Doors

 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! 

Do it Yourself

glass dog door 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.

dog door built in

Doors with Dog Doors 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.

dog door inserts

High Quality Patio 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. 

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.

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
  • One of our best sellers

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. 

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)
  • Cats Can't open the Larger Models flaps*
  • Adjustable Magnets

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


  • 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

Hi Tech Electronic Dog Doors

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

Contact Us

We are able to provide pricing over the phone in most cases. 

Dog Door Guy Inc.

5070 Willowbrook Road, Colorado Springs, Colorado 80917, United States

(720) 515-4211 Denver and Colorado Springs (719) 357-9116

Office Hours


9:00 am – 6:00 pm


9:00 am – 6:00 pm


9:00 am – 6:00 pm


9:00 am – 6:00 pm


9:00 am – 5:00 pm


9:00 am – 12:00 pm