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Professionals should be responsible for the installation of a cat flap on your door panel. The doors usually have an ungainly plastic exterior that is bonded to a soft, insulating polystyrene core. These materials can be hard to cut. It's much simpler to install a cat flap in the glass pane that is already in place, or have a new door constructed with the hole already made. A Glazier can do this for you. Easy to install Upvc door panels are a great option if you have a cat that you would like to allow it to e