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Introduce your cat to the flap prior to installation to allow them to become familiar with the dimensions and shape. The flap should be opened and let them explore it from all angles. Make sure the cutout is square and even. Mark the screw holes and align them with your cat flap opening. The distance between the edges must be equal. Preparation Having a cat flap installed in your home can be beneficial to the health and wellbeing of your pet. will allow your pet to move from the inside to the outside without needing to allow them in