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Installing a cat flap on solid uPVC door panels or double-glazed sealed units is much easier than it sounds. However, if you don't have the right equipment or know-how, you'll require the assistance of a professional. Learn how to measure and mark the area in the uPVC panel to make your cat flap. Additionally, learn how to make it weather and draft resistant. Safety A upvc-clad panel with the flap for cats is a great solution to ensure your pet's security while allowing him or her to move around freely. These panels are made from recycled materials