https://zenwriting.net/hillear....th9/through-wall-cat
Are you fed up with having to get up and down to open the door for your pets? If so, a cat flap could be the answer. Pet-flap fitters can install them into any kind of door, including uPVC or composite doors. They can also fit them into some types of walls. Security Cat flaps are typically used to cover doors, however many people also install them in windows or double-glazed doors. If you don't have a wooden door or wall, having one installed into glass is an excellent option. It's an excellent option for people who rent. It will