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It is best to hire an professional to install a cat-flap inside your home. DIY projects typically result in poorly fitted pet flaps, which can let in drafts and result in higher energy bills. SheffLOCK can fit a cat flap in most kinds of doors, including wood, uPVC, composite and glass doors as well as exterior walls. It takes around two hours to put up a new cat flap. Pet flaps cost money A pet flap permits yo