https://ai-db.science/wiki/Fit...._a_Cat_Flap_in_a_UPV
Installing a cat-flap on your home is a simple procedure. You'll need to be aware of a few points prior to getting started. You can put up upvc panels with the cat door without cutting holes in your wall or door. Many glass suppliers offer them with holes already made to fit a pet-door. 1. Safety The cat flaps made of upvc can be easily erected and fitted to a variety of different doors. They are weatherproof and energy efficient and come with a draft excluder built-in that assists in insulating the opening. They are also f