https://stairways.wiki/wiki/Ca....t_Flap_Installation_
Professionals should be responsible for the installation of a cat flap on your door panel. The doors are typically made of a thin plastic exterior that is bonded to an insulation-enhancing, soft polystyrene base. These materials can be difficult to cut. It is much easier to put the cat flap inside an existing glass pane or have the hole prepared in a new door. A glazier will be in a position to assist you. Easy to fit Upvc door panels are a great option if you have a pet cat and would like to allow it to