https://chessdatabase.science/....wiki/Cat_Flap_Instal
The addition of a cat flap to your door's panel is an important task to be handled by an experienced professional. These doors are typically constructed from a thin, plastic exterior that is bonded to an insulation-enhancing, soft polystyrene base. It isn't easy to cut through these materials. It's much easier to install the cat flap inside an existing pane of glass, or have a new door made with the hole already drilled. A glazier can be capable of doing this for you. Easy to Fit Upvc door panels are a great option if you