https://dokuwiki.stream/wiki/C....at_Flap_Double_Glazi
Professionals should handle the installation of a cat flap onto your door panel. The doors usually have an ungainly plastic exterior that is bonded to a soft, insulating polystyrene core. These materials can be hard to cut. It's much simpler to install a cat flap in an existing pane of glass, or have a new door manufactured with the hole already drilled. A glazier is in a position to assist you. Easy to install If you have a cat and would like to let them in and out without leaving your home door panels made of upvc are a great optio