Most often this is done to interest the client with affordable prices. To get full information awareness, you need to understand, this or that season is influenced on the quality of installation of PVC structures. There is a widespread opinion that due to the installation of windows in the winter period, the room is overcooling. But this is not at all so, specialists of the NIS window, thanks to the use of high -quality installation equipment and the professionalism of installers, carry out all the work quickly, observing all the rules and norms for the installation of window structures. The window opening will remain open a maximum of 25 minutes. Such a time is enough for the correct installation of the window.