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Introduce your cat to the flap before it's put in place so that they be familiar with the size and shape. The flap should be opened and let your cat explore it from every angle. Make sure that the cutout is even and square. Mark the screw holes and align them with your cat flap opening. The distance between the edges must be equal. Preparation Installing a cat-proof flap in your home is beneficial to the well-being and health of y