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The UPVC/PVCU material is eco-friendly that is impervious to fire and UV. It is also extremely insulated which reduces heating costs. It's a good choice for homes located in extreme weather zones. The installation of a cat's door into Upvc is fairly simple. Follow the instructions that come with the kit. Benefits UPVC panels are flexible and can be placed in a variety frames. They are also resistant against fire and UV radiation. This makes them a great option for homes in harsh weather areas.