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Professionals should handle the installation of a cat flap onto your door panel. The doors are typically made of a plastic exterior that is bonded to an insulating, soft polystyrene core. It can be difficult to cut through these materials. It's much simpler to install a cat flap into an existing glass pane, or have a new door manufactured with the hole already made. A glass glazier can help you. Easy to Fit Upvc door panels are an excellent option if you h