https://posteezy.com/using-upv....c-cat-flap-door-pane
Installing a cat flap your door is a relatively simple task. It is important to be aware of a few points before you begin. You can put up upvc panels with a cat door without having to cut the wall or door. Many glass manufacturers provide them with holes that is already designed for a pet-door. 1. Safety The upvc cat flaps are easy to install and installed to different doors. They are energy-efficient and weatherproof, and have draft-proofing built in to help insulate the opening. They are also fire resistant and can be customized