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If you're planning to put in an animal flap at your home, it is best to hire a professional tradesperson. DIY projects usually result in poorly fitted pet flaps that can let in drafts or increase the cost of energy. SheffLOCK is able to install a cat flap on most types of doors, including wood, glass, uPVC composite and even on external walls. On average, it takes around 2 hours to install a cat flap. Pet flaps cost money A pet flap permits your cat to go and come whenever it pleases. If the flap isn't properly installed, it w