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It is possible to put a cat flap into the upvc panel, or even a double glazing sealed unit. The best alternative is to install an entirely new glass pane that has a pre-made hole. Read the instructions that should be included in your cat flap kit, and follow them with care. Make sure that the template drawing accurately represents the shape (circle or square). Safety A microchip activated pet panel in your upvc door is a great solution if you have a dog or cat and want to let them out in the gar