MW Windows & Doors, a brand of MW Manufacturers Inc., with corporate headquarters in Rocky Mount, Va., is a leading manufacturer of window and door products for the residential construction industry. Founded in 1939, MW was one of the first window companies in the country to build a window and frame together as a single unit ready for installation into a rough opening. During World War II, MW interrupted its window operation to manufacture ammunition boxes for the war effort. Soon after the war ended, MW resumed its window manufacturing.