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Cats love looking out of windows, a pastime sometimes called cat TV. It's a form of entertainment that is often instinctive. Glass window inserts with cat flaps to doors or windows. They can be fitted in double glazing. Easy to install Cat flaps can be attached to most types of glass including french doors, patios, bifolds, and single-glazed windows. They are perfect for those who don't want to cut into a wall or door and need to allow their pet to access a window. Be aware that putting up a window