https://yamcode.com/choosing-c....at-flap-insulation-2
A cat flap lets you to allow your pet to roam more freely while saving you the headache of having to let them out and in. It will also help your pet to feel less stressed and keep them from entering the house when they're not needed. To put up a cat flap to install a cat flap, measure the distance from the bottom of the cat's stomach down to the floor. Mark a line along the door's frame. Make sure the line is level using a spirit level. 1. The kind of door It is recommended to speak with a professional if you want to install a cat fla