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Installing a pet flap on your French or Patio doors is a good option if you have cats or dogs. It makes it easy for them to get in and out without needing to open the door. There are a variety of cat flaps available that are designed to fit in uPVC or composite doors as well as wooden doors. Some have a four-way locking system that can be set to leave only, in only the open position, or both. Installation Cat flaps can be a great way to