https://blogfreely.net/atticpa....in23/get-a-upvc-door
https://www.openlearning.com/u..../hendersonahmed-skrc
It is possible to install the cat flap onto a upvc panel or a double glazing sealed unit. The best solution is to put in an entirely new glass pane that has an already-made hole. Take note of the instructions that will be included in your cat flap kit and follow them closely. Make sure the shape you've drawn (be it a square or circle) is accurately drawn on your template drawing. Safety If you have a cat or dog and would li