https://stairways.wiki/wiki/Ca....t_Flap_Installation_
Introduce your cat to the flap prior to when it's installed so they can be familiar with the size and shape. Open the flap 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 and align them with the cat flap opening. The distance between the edges should be equal. Preparation Installing a cat flap in your home can be beneficial to the well-being and health of your pet. It allows your pet to move from the inside