https://chessdatabase.science/....wiki/Cat_Flaps_For_F
It is possible to put the cat flap onto an upvc panel or double glazing sealed unit. However, the best alternative is to install a new glass pane with an already-made hole. Follow the directions that came with the kit. Make sure the shape you've drawn (be it a square or circle) is accurately drawn on the template. Safety If you have a cat or dog and want to let them in the garden without having the door open, a microchip-activated pet flap inside your door panel made of upvc is a fantastic option. It will allow your pet in,