https://articlescad.com/instal....ling-a-upvc-door-pan
https://writeablog.net/cablesa....ndra4/cat-flap-insta
If you're looking for an option to let your pet in and out without worrying about them leaving unwelcome "gifts" in the house look into a upvc door panel with cat flap fitted. This is less expensive than replacing the entire door and is simpler to install. It is possible to install an animal flap on your own uPVC doors but it's an extremely difficult task that can lead to costly errors. Easy to install If have a pet or a cat in the house,