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A cat flap made of UPVC allows your cat to come and leave as they please. The installation is a 3-step procedure that can be performed on wooden doors, glass panels or UPVC panels. This is a great choice for those who wish to ensure their pets are secure and save on energy costs. UPVC panels are strong and can withstand heat, UV and moisture. Easy to install Installing a pet flap on your glass door or glass panel is an excellent idea if you have a cat. This is a great solution to keep your pet safe while you are away.