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A wall-to-wall cat flap is a great method to allow your pets to leave and come whenever they like. Be sure not to install it too high into the wall. This could lead to energy loss and the possibility of burglars entering your home. A cavity with a hole can also be a problem for future owners should you decide to sell your home. Glass cat doors are a safer choice. Easy to install A through wall cat flap is a great option to let your cat leave and come back as it pleases. There are many mo