https://ray-singer-3.blogbrigh....t.net/cat-flap-insta
It is possible to insert an apron flap inside a upvc panel or a double glazing sealed unit. However, the most effective option would be to install an entirely new glass pane that has a pre-made hole. Read the instructions that should be provided with your cat flap kit and follow them closely. Make sure the illustration accurately depicts the shape (circle or square). Safety A microchip activated pet panel in your upvc door is a great solution for those who have a dog or cat and want to let them