https://mozillabd.science/wiki..../How_to_Install_a_UP
It is possible to fit a cat flap in the door panel made of upvc or double glazing glass sealed units but the best solution is to purchase a brand new pane of glass with a premade hole installed. Follow the instructions provided with your kit. Make sure the sketch accurately depicts the shape (circle or square). Safety A microchip activated pet door in your door made of upvc is a fantastic option when you have a pet or cat and want to let them out in the garden, but don't want to leave the door open. will allow on