https://securityholes.science/....wiki/Fitting_a_Cat_F
It is possible to insert a cat flap into an upvc panel or double glazing sealed unit. However, the most effective alternative is to install the glass pane from scratch using a pre-made hole. Follow the instructions provided with your kit. Make sure that the template sketch accurately depicts the shape (circle or square). Safety A microchip activated pet panel in your door made of upvc is a great option for those who have a dog or cat and want to let them out into the garden, but don't want to open the door. It will allow your pet in