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Installing a cat flap on your door's panel is a crucial task that should be completed by an experienced professional. These doors are typically constructed of a plastic exterior, which is then bonded to an insulate, soft polystyrene core. It can be difficult to cut through these materials. It's a lot easier to put the cat flap inside the glass pane that is already in place, or have a new door constructed with the hole already prepared. A glazier is capable of doing this for you. Easy to Fit If you have a cat and yo