Installing a cat flap an entrance door lets your pet to come and go as it pleases. Follow these steps to learn how to mark out the shape, use a jigsaw or hole saw to cut it and install your cat flap. If your cat's flap has a Manual 4-Way https://cat-flap-double-glazing62429.dailyblogzz.com/31220636/back-door-with-cat-flap-fitted