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It is possible to fit an animal flap into a door panel made of upvc, or a double glazing glass sealed units, although the best option is to have a new glass pane with an already-made hole. Follow the directions included in your kit. Make sure that the template illustration 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 opening the door A microchip activated pet flap in your upvc door panel is a fantastic option. This will only allow your pet