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Installing a cat-flap on your home is a simple procedure. You will need to be aware of a few points prior to getting started. Upvc door panels with a cat flap can be installed without having to cut a hole in your wall or door. Many glass manufacturers offer them with holes that is already designed to fit a pet-door. 1. Safety Cat flaps made of upvc are easy to install and can be adapted to different types of doors. They are energy efficient and weatherproof and have an integrated draft excluder that helps to seal the opening. They are also fire