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It is best to employ an professional to install a cat-flap in your home. DIY projects often result in poorly-fitted pet flaps that can let in drafts or increase energy bills. SheffLOCK can be installed as a cat flap in most kinds of doors, including wood composite, uPVC, composite, glass doors and even external walls. It takes around 2 hours on average to install the new cat flap. The cost of the pet flap A pet flap allows your cat to move around whenever it wishes. However, if the flap isn't properly ins