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The addition of a cat flap to your door's panel is an important task that should be carried out by a professional. These doors are typically constructed of a thin plastic exterior that is attached to an insulating, soft polystyrene core. These materials can be hard to cut. It is a lot easier to put the cat flap inside an existing glass pane, or have the hole prepared for a new door. A glazier will be capable of doing this for you. Easy to Fit Upvc door panels are an excellent option if you have