Pet Doors

Pet doors sized to the animal provide a better experience than one-size-fits-all openings. This range covers cats, small dogs, multi-pet homes and giant breeds.

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Showing 25 products, sorted by featured.

Buyer's guide

Choosing pet doors

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 Automatic Door-Mount Pet Door product detail
Start here

The right pet doors starts with the project

For multi-pet households, size the opening for the largest pet while keeping the step-over low enough for the smallest.

  • The sizing guide explains how to balance flap height and mounting height.
  • Select the product based on where it will be installed, not only on the pet.
  • Wall depth, door thickness, glass type and screen construction affect the required model.
Power Pet Automatic Door-Mount Pet Door product detail
Fit and clearance

Fit the pet, then fit the frame

Measure each animal and size to the largest required passage without making the step-over unnecessarily high for the smallest or oldest pet.

  • A useful sizing record contains more than weight.
  • Measure shoulder height while the pet stands naturally, body width at the widest point and the step-over the animal can manage without jumping.
  • Dog Doors Depot carries 11 standard flap sizes from Small Medium through Giant, including tall intermediate sizes that separate height from width.
Power Pet Automatic Door-Mount Pet Door product detail
Installation planning

Plan the installation before ordering

Use a door model for a compatible hinged panel, a tunnel model for a finished wall, a supported screen system for mesh, and a professionally fabricated in-glass assembly for glass.

  • Before purchase, photograph both sides of the proposed location and note thickness, panel shape, nearby hardware, trim, outlets, plumbing fixtures and exterior exposure.
  • Compare that evidence with the model instructions.
Power Pet Automatic Wall-Mount Pet Door product detail
Ownership and service

Weather, service and long-term use

Exterior openings benefit from deliberate flap, weather and cover choices; interior pass-throughs often prioritize low resistance and simple access instead.

  • Evaluate the door as a serviceable system.
  • Flexible flaps, magnets, strikes, weather strip, covers and locks may receive more wear than the rigid frame.
Power Pet WiFi Automatic Wall-Mount Pet Door product detail
Common pitfalls

Mistakes to avoid

Do not assume every pet door is designed for every surface.

  • Similar-looking frames can have different tunnel depth, mounting and sealing requirements.
  • 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

Choose the installation surface
Measure every pet
Check rough opening and outer frame
Select flap count and finish
Save the final SKU and manuals
Installed pet door in a glass patio door
Decision summary

Compare the project from four angles

Primary decision

Choose the pet-door family from the building surface and the animals that will use it. Cats, small dogs, large dogs and mixed-pet households can share a model only when the opening and step-over suit every user.

Fit check

Measure each animal and size to the largest required passage without making the step-over unnecessarily high for the smallest or oldest pet.

Installation check

Use a door model for a compatible hinged panel, a tunnel model for a finished wall, a supported screen system for mesh, and a professionally fabricated in-glass assembly for glass.

Ownership check

Exterior openings benefit from deliberate flap, weather and cover choices; interior pass-throughs often prioritize low resistance and simple access instead.

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.