https://postheaven.net/giantlo....tion31/cat-flap-inst
https://notes.io/w2RyY
Adding a cat flap to your door's panel is an essential task that should be carried out by an expert. The doors are typically made from a thin, plastic exterior, which is then bonded to an insulation-enhancing, soft polystyrene base. It isn't easy to cut through these materials. It's a lot easier to put a cat flap in an existing glass pane or have a new door manufactured with the hole already prepared. A glazier can be able to do this for you. Easy to install If you have a cat and would like to