https://telegra.ph/How-to-Choo....se-a-Cat-Flap-Instal
https://notes.io/w5mwv
Installing a cat flap might be a bit daunting but it's easy to do with the right instructions. Determine how high you would like the flap to be (normally it's located at the belly height). Note this on your door, and use the template included to help you drill. If you have a young kitten, prop the door slightly open and gradually push it to pass through. Reward the kitten as it moves through. Measure the Door A cat flap allows your pet to go in and out of your home at the time that is convenient