https://articlescad.com/fittin....g-a-cat-flap-583229.
Let your cat enter and leave your home without a cat flap. This lets your pet move around freely and encourages exercise. It also helps prevent overweight and eases boredom. Some of them also work on wall installations. They begin by marking the position of the door, then drilling around its corners. How do you install a cat flap A cat flap lets your pet to go outside without opening a door or window. This is helpful when you're at work late, or if you're concerned about leaving your cat on its own for long periods of time. There a