https://squareblogs.net/geartr....out7/using-a-cat-fla
Introduce your cat to the flap prior to installation to allow them to be familiar with the dimensions and shape. The flap should be opened and let them explore it from every angle. Ensure the cut-out is even and square. 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 flap inside 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