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A through wall cat flap is a great method to allow your pets to leave and come as they please. Be sure to not install it too high in the wall. This can cause energy loss and burglars to break into your home. Additionally, if you're planning to sell your home in the near future and you have an opening in a cavity wall could be an issue for new owners. Glass cat doors are a much safer choice. Easy to install A cat flap that is built into the wall is a great option to let your cat move around whenever it wants. There are numer