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Installing a cat flap on your door is a relatively simple task. It is important to be aware of a few issues before beginning. Upvc door panels with a cat flap can be installed without having to cut an opening in your wall or door. Many glass suppliers offer them with holes already made for an animal-friendly door. 1. Safety The upvc cat flaps can be easily installed and installed to different doors. They are energy efficient and weatherproof and feature a draft excluder built in to help insulate the opening. They a