Just Need To Replace The One White Top Flap Seal?
One Replacement Top Seal for Two or Three-Part Flexible Flap
How to Measure Your Ideal Pet
To determine the correct size door simply measure the width (A) and height (B) of your pet.
(A) Measure the widest point of your pets shoulder
(B) Measure from the top of your pets back (just behind his head) to the bottom of chest.