https://historydb.date/wiki/Up....vc_Door_Panels_With_
Installing a cat flap on your door's panel is an important task that should be carried out by an expert. These doors are usually made of a plastic exterior, which is then bonded to an insulation-enhancing, soft polystyrene base. These materials can be hard to cut. It is much simpler to put the cat flap on an existing glass pane or have the hole prepared for a new door. A Glazier can do this for you. Easy to Fit If you have a cat and you want to let them in and out without leaving your home doors made of upvc are a great option.