Menu
Take the sizing quiz
Dog Doors Depot
Sizing Quiz(866) 667-8126
Home / Collections / Automatic Dog Doors for Large Dogs

Automatic Dog Doors for Large Dogs

Large dogs need an automatic opening selected by actual shoulder height and body width. Compare the medium, large and extra-large passages by the pet first, then confirm the larger housing fits the building.

Filter your search
By Category:
Popular For:
Sort By

Showing 9 products, sorted by featured.

Buyer's guide

Choosing automatic dog doors for large dogs

Start with the pet, the opening and the conditions around it. Then compare the details that make the installation comfortable, durable and easy to service.

Power Pet WiFi Automatic Door-Mount Pet Door product detail
Start here

The right automatic dog doors for large dogs starts with the project

Measure the widest point of the body and the height needed for a natural stride.

  • A large dog should not have to twist, scrape the sides or crouch sharply, but an unnecessarily oversized opening adds installation and weather compromises.
  • Tape the full housing and cutout on both faces of the proposed door or wall.
  • Check framing, door rails, hardware, trim, power access and the pet's step-over before selecting the final SKU.
Power Pet WiFi Automatic Door-Mount Pet Door product detail
Fit and clearance

Fit the pet, then fit the frame

Measure the pet directly and tape the clear passage, cutout and complete housing on the proposed surface.

  • Large labels are not interchangeable across model families.
  • Take each measurement at least twice.
  • Use the widest body point for horizontal clearance and the top of the shoulders for vertical planning; the head may dip naturally, but the back should not scrape the frame.
Power Pet Automatic Wall-Mount Pet Door product detail
Installation planning

Plan the installation before ordering

Check structure, door rails, hardware, trim, power access and the pet's approach on both sides before a large permanent opening is made.

  • Once a flap size looks comfortable, stop and check the building dimensions.
  • Larger openings need larger rough cuts and frames, and tall sizes may run into glass, door rails, wall framing or screen crossbars.
Power Pet WiFi Automatic Wall-Mount Pet Door product detail
Ownership and service

Weather, service and long-term use

A properly fitted opening reduces scraping and awkward crouching while avoiding unnecessary open area.

  • Inspect the panel path, sensors and housing under frequent use.
  • Sizing affects daily performance for the life of the opening.
  • An undersized door can encourage crouching, hesitation or contact with the frame.
Power Pet WiFi Automatic Door-Mount Pet Door product detail
Common pitfalls

Mistakes to avoid

Do not size by weight or breed name alone, and do not enlarge a listed model in the field to imitate an unavailable size.

  • A strong preflight is deliberately repetitive: measure again, check the dimensional label, compare both faces of the opening and read the exact manual.
  • Confirm that the host door, wall, screen, glass or kennel panel remains safe and functional after the cutout.
Power Pet Automatic Wall-Mount Pet Door product detail
Order readiness

From a shortlist to an order-ready configuration

Move from shortlist to order only after four checks agree.

  • The pet fits the clear opening; the building can accept the rough opening and full frame; the selected model matches the surface and thickness; and the flap, finish, cover and accessory choices match the intended use.
  • Read the finished configuration back as a complete sentence before approving it: model family, named size or custom dimensions, measurement basis, frame finish, flap count, installation surface, finished thickness and mounting location.
  • Then compare that sentence with the cart, worksheet and installer scope.
Designed around real homes

What a good dog-door decision includes

Measure shoulder height and body width
Set a comfortable step-over
Compare actual flap dimensions
Check the larger frame footprint
Size for every pet using the opening
Installed pet door in a glass patio door
Decision summary

Compare the project from four angles

Primary decision

Choose the smallest automatic opening that gives the measured large dog comfortable shoulder, body and step-over clearance, then compare the compatible mounting systems.

Fit check

Measure the pet directly and tape the clear passage, cutout and complete housing on the proposed surface. Large labels are not interchangeable across model families.

Installation check

Check structure, door rails, hardware, trim, power access and the pet's approach on both sides before a large permanent opening is made.

Ownership check

A properly fitted opening reduces scraping and awkward crouching while avoiding unnecessary open area. Inspect the panel path, sensors and housing under frequent use.

Ready when the details agree

Find the door that fits the pet and the project.

Use the sizing quiz for a guided recommendation, or return to the products above with your measurements in hand.

Take the sizing quizShop this collection
Continue comparing

Related dog-door collections and guides

All large dog doorsAll automatic modelsLarge-dog sizing guideInteractive sizing guideCustom size calculator
Questions, answered

Common questions about automatic dog doors for large dogs

What should I compare first when shopping automatic dog doors for large dogs?+

Choose the smallest automatic opening that gives the measured large dog comfortable shoulder, body and step-over clearance, then compare the compatible mounting systems. Shopping Automatic Dog Doors for Large Dogs begins with proportions, not a weight bracket. Dogs of similar weight can have very different shoulder height, chest width and leg length. The 11-size system includes tall versions that add vertical clearance without automatically adding width, plus wider XL and Giant choices for broad animals. Compare actual clear openings and watch the animal’s natural gait. The goal is a passage that does not demand a deep crouch, shoulder compression or a jump over an unnecessarily high lower edge.

How do I know whether automatic dog doors for large dogs will fit?+

Measure the pet directly and tape the clear passage, cutout and complete housing on the proposed surface. Large labels are not interchangeable across model families. Check the clear flap opening for the pet, the rough opening for the cut and the tip-to-tip frame for the available mounting area.

What should an installer verify for automatic dog doors for large dogs?+

Check structure, door rails, hardware, trim, power access and the pet's approach on both sides before a large permanent opening is made. The exact product instructions and selected SKU should be available before any permanent opening is made.

How should I maintain automatic dog doors for large dogs?+

A properly fitted opening reduces scraping and awkward crouching while avoiding unnecessary open area. Inspect the panel path, sensors and housing under frequent use. Record the model and size, keep moving surfaces clean and replace only verified compatible service parts.

Can I use the sizing quiz before ordering automatic dog doors for large dogs?+

Yes. The sizing quiz is a useful starting point because it asks for the pet, opening type, size and weather conditions before pointing you toward a model family.

What if a standard size does not work for automatic dog doors for large dogs?+

Use the custom-size workflow after checking the standard size chart. Enter whether the measurement is based on flap opening, rough opening or outer frame so the order and installer are working from the same dimensions.

How do I choose the right pet door size?+

Measure from the floor to the top of your pet’s shoulders and measure the widest point of the body. The flap should generally sit about 1–2 inches above the shoulders, with a comfortable step-over height. Use the actual pet measurements rather than breed averages.

Are these pet doors made to order?+

Yes. Frame color, flap count, size and installation type are selected for your opening. Review the measurements and selected configuration carefully before submitting an order.

Can I replace the flaps later?+

Yes. Replacement flaps, flap kits, magnets, weather stripping, locks and covers are available. Match the replacement part to the original pet-door size and model.