https://mcmahan-vistisen.hubst....ack.net/cat-flap-fit
https://jsfiddle.net/lunchdragon9/bk2gevm0/
Consider installing a cat flap onto a upvc panel door for those who want to allow your pet to enter and exit the home without worrying that they will leave unwanted "gifts". This option is cheaper than replacing the entire door and easier to install. While it is possible to put an animal flap inside your own uPVC door, you need to be aware that this is a tricky job that could result in costly mistakes. Easy to install If you have a pet or a cat living in your home