A couple examples of folded proposal graphics. 
These 11x17/A3 foldout graphics are left bound into a binder (hole punched) and folded from the right in Z pattern. They are used in proposals to include more information than can typically fit on a portrait letterhead page (8.5x11/A4). These were specifically designed to present high level/condensed information when closed and more detailed information when opened. 
Content has been changed to remove proprietary information. Hence the "text goes here" and other random text that makes no sense. 
11x17 Closed View
11x17 Open Graphic
11x17 Close View
11x17 Open View