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Installing a cat flap on your door is a crucial task that should be carried out by a professional. The doors are typically made of a flimsy plastic exterior bonded to a soft, insulate polystyrene. It can be difficult to cut through these materials. It is a lot easier to install the cat flap on an existing glass pane, or have the hole prepared in a door. A glazier can do this for you. Easy to Fit Upvc door panels can be an excellent option if y