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If you're planning to install a pet flap inside your uPVC door or glass panel, you'll require the services of an expert cat flap fitting expert. They can also assist you with more sophisticated models, such as microchip pet flaps. DIY efforts to put in pet flaps often fail and can lead to issues such as the possibility of draughts or low energy efficiency. A professional tradesperson can spare you the trouble and expense of dealing with these issues. Cost