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Cat flaps allow your pet to enter and exit at their own pace, without needing to open a door or window. They are available in a variety materials and can be installed into windows, doors and even walls. A professional tradesman can install a cat flap for any door, including composite, wood, and uPVC. Installation Costs The cost of installing a cat flap could vary significantly depending on the size, type and complexity of the task. The material of the wall or door can also impact the labor cost. Installation into the frame of a French glass door, fo