https://posteezy.com/how-install-cat-flap-131
https://articlescad.com/replac....ement-upvc-door-pane
It is possible to insert an apron flap inside an upvc panel or double glazing sealed unit. However, the best solution is to put in the glass pane from scratch using a hole that is already made. Follow the instructions provided with your kit. Make sure that the sketch accurately depicts the shape (circle or square). 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 o