https://mozillabd.science/wiki..../Why_Install_a_Doubl
Introduce your cat to the flap before it's set up so they can get used to the size and shape. The flap should be opened 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 your cat flap opening. The distance between the edges should be the same. Preparation Installing a cat flap in your home is beneficial for the health and well-being of your pet. It allows your pet to freely move from inside to the outside, without having let them in or