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Introduce your cat to the flap prior to installation so that they can become familiar with its dimensions and shape. Unlock the flap 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 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 health and well-being of your pet. This is because it will allow them to freely move between the indoors and outdoors without you