Very insightful. Thanks guys. So is it that the actual windows are round, or just the framework/interior covering. i.e: Are the actual windows "square" but the surrounding materials being cut to the shape of the final appearance to make the "plastic" windows look like they are the same shape? In other words, are the windows as they are seen, THIS shape and slotted into place?
At which part of the process does one fit windows, and are they really made from 2 sheets of plastic both inside and out?