https://jsfiddle.net/paullier4/c8mdzorp/
https://heller-rouse-4.blogbri....ght.net/cat-flap-fit
https://ross-gunter.hubstack.n....et/installing-a-cat-
You and your cat will both benefit from adding the cat flap inside your bifold door. It can also help prevent extreme cold or hot weather from entering your home. First, you need to measure your pet in order to determine the right size door flap you need. This will allow you to make a hole that is appropriate for the cat flap. Outdoor Access Even those with minimal DIY skills