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Introduce your cat to the flap prior to when it's set up so they can be familiar with the size and shape. Prop the flap open and let them explore it from every angle. Make sure that the cutout is square and even. Mark the screw holes and align them with the cat flap opening. The distance between the edges should be the same. Preparation Installing a cat-proof flap in your home is beneficial to the well-being and health of your pet. It will allow your pet to move from the inside to the outside without y