UZO1 CLIPBOARD CALCULATOR WITH DOCUMENT STORAGE HOLDER Clipboard comes with a built in document storage box to hold documents / paper It comes with a movable bar in the storage space to allow you create compartments Clipboard storage space is  inch (17 mm) deep and holds 8  x 11 size forms The clip provides over 1 inch document holding capacity Writing surface dimension is 8  x 12 inches (A4 Paper Size)