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of a cat flap in solid uPVC door panels or double-glazed sealed units is a lot easier than it may sound. If you don't possess the right tools or no experience, you'll require the help of the help of a professional. This guide will teach you how to mark, measure and cut the cat flap area on the uPVC panel. Also, learn how to make the flap weather and draft resistant. Safety A upvc panel that has an enclosed flap for cats