The glass on a Marvin Coastline Specialty Shape Narrow Frame window is glazed directly into the frame, eliminating the need for a sash. This results in narrow sightlines, more light, and unobstructed views. The sleek, streamlined appearance of the narrow frame will complement any contemporary aesthetic. These Narrow Frame windows are available in hundreds of geometric shapes and provide the design freedom to create unique and stunning architectural statements. Designed for beauty and built for safety, these modern impact resistant windows provide unsurpassed protection from tropical storms and hurricanes.