Windows and exterior doors are, naturally, a major architectural feature of home and other living spaces. They also represent a major investment in that they are among the most expensive parts of a building budget. Nowadays the line between windows and doors can be a little blurred. After all, French windows and sliding or folding screen glass doors are both windows and doors. But even the highest quality and expensive windows and exterior doors need other elements to make the most of their practical function and their beauty, and this is where Blinds come in. Windows and exterior doors are, naturally, a major architectural feature of home and other living spaces. But even the highest.