Pet Door Design
Patio Pet Door conversion system is custom built to fit your door, then installed by Great Northern.

Easy install
Use existing windows and doors
A must for pet owners
Transform Your Patio Door, Window, or Any Glass Door Into a Functional and Energy Efficient Pet Door.
- Designed to replace glass in the *sliding section of patio doors (pat. pend.).
- Trim-line frame built to the same height, width and thickness as the existing glass it replaces to include a quality pet door and new tempered double pane glass pre-installed.
- Measures and installs like a normal insulated glass replacement. Comes fully assembled.
Reversible. The old glass can be re-installed if the home is sold or the owner no longer has a pet.
Versatile
- Custom built for each application.
- Three fusion welded vinyl frame profiles in white or beige come in 5/8th-3/4 and 1. sizes.
- Ideal for new construction or retro-fit. Will fit most sliding patio doors built in the United States with double pane glass. Single pane wood doors can convert by trimming the stops.
- Small, medium, large and extra large pet door sizes fit most dogs and cats.
Warranty
Warranted against defects in material and workmanship for one year. Limited lifetime warranty against thermal pane seal failure to the original owner.
How It Works
The Pet Door Design conversion system comes complete, ready for installation by Great Northern. It is the only patio pet door product of it’s type available. It replaces the double pane glass in the sliding panel, and in some cases, the fixed panel of your patio door. It’s quick and easy. Your pet will love it too!

Your Pet Door Design patio pet door conversion system will:
- Allow your sliding door to slide, lock and function the same.
- Allow your screen to work normally.
- Maintain your doors built in efficiency. The system comes with new double pane safety glass. Your weather stripping still lines up and seals properly.
- Allow Secondary locks and alarms to work without modification.
- Maintain full unobstructed view.
- Easy to remove. If you sell your home or no longer have a pet, the original glass can be re-installed in minutes.
Two quality pet doors to choose from. Both feature 4 sizes.
- Pet Safe Classic. One of America’s best selling pet doors, the Classic comes standard. It features a sturdy aluminum frame and a quality security cover with dead pin lock. The flap features a built in magnetic closing strip to help reduce drafts. This attractive and reliable door works best in moderate climates.
- Endura Flap by Patio Pacific. One of the best pet door products on the market. The Endura flap features an insulated flap design with 3-sided weather strip. The flap is adjustable for tension. Increase the magnets in windy conditions or reduce tension for smaller pets ease of use. This door is great in colder climates, but is the energy efficient choice in any climate.
Let us give you a free estimate for your new pet door.
Just fill out this form and one of our friendly team members will schedule your free in-home estimate.
Serving all of central Oregon
Licensed, Bonded, Insured
Visit our showroom during business hours 8-4 Monday through Friday. Appointments are recommended.