https://articlescad.com/fittin....g-a-cat-flap-547119.
It is possible to install an apron flap inside the upvc panel, or even a double glazing sealed unit. However, the best solution is to put in a new glass pane with a pre-made hole. Follow the directions included in the kit. Make sure that the shape you have drawn (be it a square or circle) is accurately drawn on the template. Safety If you have a cat or dog and would like to allow them access to the garden without leaving the door open, a microchip activated pet flap on your door panel made of upvc is a fantastic option. It will onl