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It is a material that is resistant to UV rays and fire, is eco-friendly. It's also highly insulated and can reduce heating expenses. It's a good choice for homes in extreme weather zones. Fitting a cat door into a upvc is relatively easy. Follow the directions which should be included with the kit you buy. Benefits UPVC panels are flexible and can be placed in a variety frames. They are also immune to fire and UV radiation. This makes them an excellent option for homes located in extreme climate zones.