https://kern-ross.hubstack.net..../through-wall-cat-fl
https://telegra.ph/Fit-a-Cat-F....lap-in-a-UPVC-Door-P
Adding a cat flap to your door is an essential task that should be carried out by an experienced professional. These doors are usually made from a thin, plastic exterior that is attached to an insulate, soft polystyrene core. It can be difficult to cut through these materials. It's much easier to install a cat flap in the glass pane that is already in place or have a brand new door constructed with the hole already made. A glazier is able to do this for you