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You'll need an installer for your cat flap for installing a pet door inside your uPVC or glass panel. They can also help you with more advanced models, such as microchip pet flaps. DIY attempts to fit a pet flap often fail and lead to issues such as the possibility of draughts or low energy efficiency. A professional tradesperson can save you the headache and expense of tackling these problems. Cost The cost of installing a cat flap will be influenced by a variety of factors. The kind of flap you pick and the type of surf