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A upvc panel cat flap lets your cats leave and come whenever they want to. It's a simple three-step installation process and can be fitted into wooden doors, glass doors, or UPVC panels. This is an excellent option for those who wish to ensure their pets are secure and save money on energy. UPVC panels are tough and can withstand moisture, heat and UV. Easy to install If you have a cat you might want to think about installing a pet flap inside you