https://squareblogs.net/suedel....izard4/through-wall-
A cat flap that runs through the wall allows your pet to go in and out whenever they want. However, you should be cautious not to put it too high on the wall. This can lead to energy loss and the possibility of burglars gaining access to your home. A hole in a cavity could be a problem for future owners should you decide to sell your house. Glass cat doors are a much safer option. Easy to install A wall-to-wall cat flap is a great method to let your cat come and go whenever it wants. There are numerous models available and they