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Are you tired of having to climb up and down to open your doors to let your pets in? If this is the case, a cat door could be the answer. Pet-flap fitters can install them into any kind of door that is available, including uPVC or composite doors. They can also install them into certain types of walls. Security Cat flaps are usually installed on doors, but many also have them installed in windows or double-glazed doors. If you don't have a wooden door or wall, having one installed into glass is an excellent op