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If you are planning to install an animal flap at your home, it is best to hire an expert tradesperson. DIY projects typically result in poorly-fitted pet flaps that could allow in draughts or raise energy bills. SheffLOCK can be fitted as a cat flap in most types of doors including wood composite, uPVC, composite, glass doors as well as exterior walls. On average, it takes about two hours to install the cat flap. Cost of pet flap A pet flap permits your cat to move around whenever it wants. If the flap is not