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Are you tired of having to stand up to open the door for your pet. A cat flap may be the answer. Pet-flap installers can install them in any kind of door, regardless of whether it's uPVC, composite or composite. They can also be fitted into certain types of walls. Security Cat flaps are often installed on doors, but many have them installed in windows or double-glazed doors. A glass-based cat flap could be a good choice when you do