What does the door look like?
Is it store bought or did you build it yourself?
I built the cat door about 4 months ago. Made with piece of plexiglass and pvc hinge left over from golf cart windshield project. Cut into man door with aluminum trim covering raw edges. It goes into detached garage. Racoons started becoming a problem about 3 months ago.
Still working on lock system, that will be easy but wanted to get programming done first.