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Introduce your cat to the flap prior to installation to allow them to be familiar with the size and shape. Prop the flap open and let them explore it from all angles. Make sure that the cutout is square and even. Mark the screw holes and align them with your cat flap opening. The distance between the edges should be the same. Preparation Installing a cat-proof flap in your home can be beneficial to the health and well-being of your pet. This is because it will allow them to freely move between indoors and outside without needing to