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Installing a pet flap on your French or Patio doors is a good idea if you have pets such as a cat or dog. It makes it easier for them to go in and out without you having to open the door. There are several options for cat flaps designed to fit in uPVC or composite doors, as well as wooden doors. Some come with a four-way locking system which can be set for exit only or in-only. Installation Cat flaps can be a great way to let your cat out and in of the home without having to open the door each time. This is es