https://fakenews.win/wiki/The_....Benefits_of_Cat_Flap
Introduce your cat to the flap before 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 the cut-out is level and ensure that the cut-out is square and even. Mark the screw holes on the door and align them with the opening for the cat flap The distance between the edges should be the same. Preparation A cat flap in your home is beneficial for the health and wellbeing of your pet. It allows your pet to freely move from the inside to the outside without you