https://moparwiki.win/wiki/Pos....t:Cat_Flap_Installat
A cat flap that runs through the wall allows your pets to come in and out as they please. But, you should be cautious not to put it too high in the wall. This can lead to energy loss and the possibility of burglars entering your home. If you are planning to sell your home in the near future having a hole in a cavity wall could be an issue for prospective buyers. Glass cat doors are a safer choice. Easy to install A wall-to-wall cat flap lets your cat to come or go as it pleases. It's simple to set up