Compared to other window manufacturers, aluminum windows offer many benefits. An aluminum frame can be fabricated in extremely narrow dimensions, which makes it a top seller. The main advantage of narrow frames is that they have the potential to shift the focus of window design away from the frame, so the focus is on the glass, or, more importantly, what lies beyond the glass. New York Times says that you notice the view rather than the window itself when looking out the window. Aluminum is also extremely lightweight, so it can be used on projects where heavier materials may not be suitable.