The advantages that distinguish modern plastic windows is unlikely to explain to anyone. In addition to the durability, practicality, outstanding aesthetic and operational characteristics, it is necessary to note the dignity of PVC windows as an acceptable cost, which is gradually reduced. Initially, the presence of a plastic window in the house was considered an evidence of the high income of its inhabitants, today they have become a completely ordinary attribute and are installed almost everywhere, not to mention new houses that are surrendered to equipped PVC systems.