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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. Prop the flap open and let them explore it from all angles. Make sure that the cut-out is even and ensure that the cut-out is square and even. Mark the screw holes on the door and align them with the cat flap opening - the distance between the edges should be equal. Preparation Installing a cat-proof flap in your home can be beneficial to the h