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Installing a cat flap on solid uPVC door panels or double glazed sealed units is a lot easier than it seems. If you don't have the right tools or have no experience, you'll require the help of a professional. This guide will show you how to mark the, measure and cut the cat flap area of the uPVC panel. Also, how to make the flap weatherproof and draft-proof. Safety A door made of upvc with a cat flap is an excellent way to keep your pet safe while allowing them freedom of movement. These panels can be made from recycled ma