https://aiwins.wiki/wiki/Cat_Flap_Double_Glazing
It is possible to put the cat flap onto the upvc panel, or even a double glazing sealed unit. However, the most effective solution is to put in the glass pane from scratch using a pre-made hole. Follow the directions included in the kit. Make sure the sketch accurately depicts the shape (circle or square). Safety If you have a dog or cat and would like to let them into the garden without leaving the door open A microchip activated pet flap on your upvc door panel is a great choice. It will allow only your pet to enter while preventing ot