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Installing a cat flap on your home is a easy process. It is important to be aware of a few things before you begin. You can install upvc panels with the cat door without cutting the door or wall. Many glass companies offer them with a hole already made to fit an animal-friendly door. 1. Safety The cat flaps made from upvc can be easily installed and fitted to a variety of different doors. They are energy efficient and weatherproof and have a built-in draft excluder wh