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If you are purchasing a Pet Door System, make sure all the components are the same size.

Retrofit Compatibility

If you're looking to install Pawport Smart Pet Door onto your existing pet door, use the measurements below to select the right size for your particular opening. An exact fit is not required. Pawport adjusts to fit onto any pet door, guaranteed.*

Smart Pet Door Dimensions

15.4'' W x 20.5'' H
(391 mm x 521 mm)

15.4'' W x 24.5'' H
(391 mm x 622 mm)

15.4'' W x 28.5'' H
(391 mm x 724 mm)

Existing Pet Door Opening

For any opening up to 13.25'' W x 16.25'' H
(337 mm x 413 mm)

For any opening up to 13.25'' W x 20.25'' H
(337 mm x 514 mm)

For any opening up to 13.25'' W x 24.25'' H
(337 mm x 616 mm)

Medium

Smart Pet Door Dimensions 15.4'' W x 20.5'' H
(391 mm x 521 mm)

Existing Pet Door Opening For any opening up to 13.25'' W x 16.25'' H
(337 mm x 413 mm)

Large

Smart Pet Door Dimensions 15.4'' W x 24.5'' H
(391 mm x 622 mm)

Existing Pet Door Opening For any opening up to 13.25'' W x 20.25'' H
(337 mm x 514 mm)

Extra Large

Smart Pet Door Dimensions 15.4'' W x 28.5'' H
(391 mm x 724 mm)

Existing Pet Door Opening For any opening up to 13.25'' W x 24.25'' H
(337 mm x 616 mm)

New Installations or Remodels

If you don't have an existing pet door and you're looking to install Pawport as part of a complete Pawport system, use the information below to help you select the size that is best for your pet.

Smart Pet Door Dimensions

15.4'' W x 20.5'' H
(391 mm x 521 mm)

15.4'' W x 24.5'' H
(391 mm x 622 mm)

15.4'' W x 28.5'' H
(391 mm x 724 mm)

Smart Pet Door Opening

13.25'' W x 16.25'' H
(337 mm x 413 mm)

13.25'' W x 20.25'' H
(337 mm x 514 mm)

13.25'' W x 24.25'' H
(337 mm x 616 mm)

Recommended
Pet Size

0 - 85 lbs

85 - 125 lbs

125+ lbs

Recommended
Pet Height

8" - 25"

8" - 29"

8" - 36"

Medium

Smart Pet Door Dimensions15.4'' W x 20.5'' H
(391 mm x 521 mm)

Smart Pet Door Opening13.25'' W x 16.25'' H
(337 mm x 413 mm)

Recommended Pet Size0 - 85 lbs

Recommended Pet Height8" - 25"

Large

Smart Pet Door Dimensions15.4'' W x 24.5'' H
(391 mm x 622 mm)

Smart Pet Door Opening13.25'' W x 20.25'' H
(337 mm x 514 mm)

Recommended Pet Size85 - 125 lbs

Recommended Pet Height8" - 29"

Extra Large

Smart Pet Door Dimensions15.4'' W x 28.5'' H
(391 mm x 724 mm)

Smart Pet Door Opening13.25'' W x 24.25'' H
(337 mm x 616 mm)

Recommended Pet Size125+ lbs

Recommended Pet Height8" - 36"

Tips for New Installation Door Selection

Pet Height
Measure from the floor to the highest part of your pet's back. Add 2" - 3" to the measured height so your pet can go through comfortably.
Step Over Height
The "step-over" height is the space between the bottom of the pet door and the surrounding door or wall, chosen based on your pet's size and mobility. It should allow your pet to pass through comfortably, with the bottom of the door positioned 3" - 4" above the surface to protect the door's structure during installation.
Consider Multiple Pets
When choosing a pet door for a home with multiple pets, select one based on the size of your largest pet to ensure it works for the smaller ones as well. Consider the step-over height for the smaller pets, and you may need to install a taller door low enough to accommodate them while still being suitable for your larger pet.

1" Width

Small

15" - 19" (381 mm - 383 mm) Adjustable Length

Medium

16" - 22" (406 mm - 559 mm) Adjustable Length

Large

20" - 30" (508 mm - 762 mm) Adjustable Length

5/8" Width

Small

11" - 12" (279 mm - 305 mm) Adjustable Length

Medium

12" - 15" (305 mm - 381 mm) Adjustable Length

Large

15" - 19" (381 mm - 482 mm) Adjustable Length

Smart Pet Tag

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Smart Pet Tag (Battery & Mounts)

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Size Guide

Retrofit Compatibility

Medium

Large

Extra Large

Medium

Large

Extra Large

New Installations or Remodels

Medium

Large

Extra Large

Medium

Large

Extra Large

Tips for New Installation Door Selection

Pet Height

Step Over Height

Consider Multiple Pets

Need more help choosing the right size or understanding installation requirements? Need more help?

Size Guide

1" Width

Small

Medium

Large

5/8" Width

Small

Medium

Large