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It is best to employ an professional to install a cat-flap inside your home. DIY projects usually result in a poorly-fitted pet flap that allow in draughts and lead to more energy costs. SheffLOCK can be fitted as a cat flap on all types of doors including wood, uPVC, composite and glass doors, as well as external walls. It takes approximately 2 hours on average to install a new cat flap. The cost of the pet flap A pet flap is a great option to let your cat leave and come as it pleases. If the flap isn't insta