https://www.openlearning.com/u..../gustafssonmunn-smmx
https://blogfreely.net/brainle....gal5/cat-flap-glass-
Introduce your cat to the flap prior to installation so that they can become familiar with its dimensions and shape. Unlock the flap and let your cat explore it from every angle. Make sure the cutout is even and square. 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 Installing a cat flap inside your home is beneficial for the