https://carpbite05.bravejourna....l.net/using-upvc-cat
https://zenwriting.net/parrots....atin98/adding-a-cat-
It may seem difficult to put up the flap for your cat, but with the right instructions, it's not too difficult. Firstly, determine how high you want the flap to be (on average, belly height). Mark this point on the door and then use the template included as a guideline to drill. If you have a small kitten you can prop the door open very slightly and gradually encourage it to pass through. Reward the kitten every time it moves through. Tak