https://yamcode.com/get-a-upvc....-door-panel-with-cat
https://telegra.ph/Installing-....a-Cat-Flap-in-a-UPVC
It is possible to insert a cat flap into the upvc panel, or even a double glazing sealed unit. However, the best solution is to put in the glass pane from scratch using an already-made hole. Follow the directions that should be included with the kit for cat flaps, and follow them with care. Ensure that the shape drawn (be it square or circle) is accurately represented on the template. Safety If you have a cat or dog and want to let them in the gar