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If you are planning to install a cat flap in your home, it's best to hire a professional tradesperson. DIY projects usually result in poorly-fitted pet flaps that could let in draughts or increase energy bills. SheffLOCK can be fitted as the cat flap into all types of doors including wood composite, uPVC and glass doors, as well as external walls. It takes about two hours to install the cat flap. Cost of the pet flap A pet flap is an ideal option to let your cat move around at will. If the flap isn't properly installed, it will