https://perfectworld.wiki/wiki..../Cat_Flap_Installers
Installing a cat-flap to your home is a simple procedure. However, you'll have to be aware of a few things prior to beginning. You can put up Upvc panels to create the cat door without cutting a hole into your door or wall. They are available from a range of glass companies with a premade hole to fit the door for your pet. 1. Safety The upvc cat flaps can be easily erected and installed to different doors. They are energy efficient and weatherproof, and they have a draft excluder built-in that assists in insulating the opening.