https://telegra.ph/Fitting-Cat....-Flap-in-UPVC-Door-P
Installing a cat-flap to your door is an easy procedure. You'll need to be aware of a few things before beginning. Upvc door panels that have an opening for cats can be fitted without having to cut an opening in your door or wall. They are available from a range of glass manufacturers with a pre-made hole for a pet door. 1. Safety upvc door panels cat flaps are simple to install and can be installed to many different types of doors. They are weatherproof and energy efficient and come with a draft excluder built-in that help