They are generally large openings that could function as doors as well. If you love your light and your fresh air then this is the right window for you. Its elegant renaissance style is still a big favorite among some. They generally are best suited for balcony openings or patio openings where you have an unobstructed view. These can be custom designed to suit the width and height of any opening. As this is totally on customization we have not set any fixed design.