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Professionals should be responsible for the installation of a cat flap on your door panel. The doors are typically made of a thin plastic exterior that is attached to an insulation-enhancing, soft polystyrene base. It can be difficult to cut through these materials. It is a lot easier to fit the cat flap inside an existing glass pane, or to have the hole drilled in a new door. A glazier is capable of doing this for you. Easy to fit Upvc door panels can be an