UPVC door is a door made of UPVC. UPVC is usually called hard PVC. It is composed of amorphous thermoplastic resin made by polymerization of vinyl chloride monomer and certain additives. UPVC doors can be used in different rooms of the building. This can be used as a patio or patio door to the garden. If you plan to remodel your house, please seriously consider using it. Choosing these aluminum doors can save you a lot of money and installation troubles.