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It's simpler than you think to put the cat flap on a solid uPVC panel or a sealed double glazed unit. If you don't have the right tools or have no experience, you will need an expert. Follow this guide to learn how to measure and mark the space in the uPVC panel for your cat flap. Also, learn how to make the flap weather and draft resistant. Safety A upvc-clad panel with an enclosed flap for cats is a great option to ensure your pet's security while still allowing your pet to move about freely. These panels a