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A cat flap that is through the wall is a great option to let your pets come and go as they please. But, you should be careful not to place it too high in the wall. This can cause the loss of energy and also allow burglars to gain entry into your home. Also, if you are planning to sell your home in the near future and you have an opening in your cavity wall could be an issue for prospective buyers. Glass cat doors are a safer alternative. Easy to install A thro