https://historydb.date/wiki/Fi....t_a_Cat_Flap_in_a_UP
Adding a cat flap to your door's panel is an important task that should be completed by a professional. The doors usually have a flimsy plastic exterior that is bonded to a soft insulating polystyrene core. These materials can be difficult to cut. It is much easier to put the cat flap into an existing glass pane or have the hole prepared in a new door. A glazier is able to do this for you. Easy to fit If you have a cat and you want to allow them to enter and exit without having to leave your home doors made of upvc are a g