https://morphomics.science/wik....i/Cat_Flap_Installat
It is possible to install an animal flap into a door panel made of upvc, or a double glazing glass sealed unit however the best choice is to buy a new pane of glass with an already-made hole. Take note of the instructions that will be provided with the kit for cat flaps, and follow them with care. Make sure that the template sketch accurately depicts the shape (circle or square). Safety If you have a cat or dog and would like to let them in the garden without having the door open A microchip activated pet flap