https://lovewiki.faith/wiki/In....stalling_a_upvc_Door
Cats are fond of looking out of windows, which is a form of entertainment sometimes called cat TV. It's a natural and enjoyable pursuit that is often hunter-like. You can install glass window inserts with cat flaps to existing windows or doors. They can be put in double glazing. Easy to Fit Cat flaps can be affixed to any type of glass including patio doors, french doors, bifolds, and single-glazed windows. These are perfect for people who don't wish to cut into their walls or doors to allow access to their pet through a