https://perfectworld.wiki/wiki..../Cat_Flap_Glass_Door
Introduce your cat to the flap prior to the installation so that they can become familiar with its dimensions and shape. Open the flap and let your cat explore it from every angle. Make sure 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 equal. Preparation A cat flap in your home can be beneficial for the health and well-being of your pet. This is because it lets the pet to move freely between the indoors and outdoors without n