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If you're looking to install a pet flap inside your uPVC door or glass panel, you'll need the services of an expert cat flap installer. They can also help with more advanced models like microchip pet flaps. DIY attempts to install a pet flap can go wrong and can lead to issues such as draughts and low energy efficiency. A professional tradesperson can spare you the headache and expense of addressing these issues. Cost The cost of installing