Casement Window Casement windows have a single sash, which is hinged on the side and cranks open vertically on a metal track. The sash opens with the turn of a handle, making casement windows a great replacement choice for hard-to-reach places, such as over countertops and sinks and house fronts giving your place a unique look. Contact Us Today CookCountyWindows@gmail.com(773) 817-3994Monday – Friday: 8 AM – 6 PMSaturday: 10AM – 6PMSunday: Closed