Window can be designed of various shape with different type of opening. Shape can be round, arched, triangular, trapeziform and others.
All windows are made individually according to your measures and desires of the opening.
To ensure the long service life the opening part of the window should be compatible with the permitted size. Maximum window sizes are provided in the tables below on the example of Ideal 4000 and Ideal 7000. Window can not exceed the measures that are outside the picture line. It is possible to make a bigger window if use other materials, for example aluminium constructions. Large window size can cause its displacement.