https://botdb.win/wiki/UPVC_Do....or_Panel_Replacement
It is possible to insert a cat flap into an upvc panel or double glazing sealed unit. However, the most effective solution is to put in a new glass pane with a hole that is already made. Follow the directions included in the kit. Make sure the drawing accurately represents the shape (circle or square). Safety If you have a dog or cat and want to allow them access to the garden without having the door open, a microchip-activated pet flap on your door's upvc panel is a fantastic option. This will only allow your pet to access th