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Installing a cat-flap in your home is a simple process. You will need to be aware of a few issues prior to getting started. You can install Upvc panels to create the cat door without cutting holes in your door or wall. Many glass suppliers offer them with a hole that is already designed for the purpose of a pet-door. 1. Safety Cat flaps made of upvc are easy to install and can be fitted to many different kinds of doors. They are weatherproof and energy efficient and come with a draft excluder built in to aid in insulat