C-Line Vertical Expanding File, 10" Expansion, 13 Sections, 1/12-Cut Tabs, Letter Size, Black - Take up less room on your desk by organizing papers, manuals, magazines and more vertically! Features stand-up design for easy access and extra expansion. Cut-outs on each side make it simple to transport. Expands up to 10" wide to maximize on storage capacity. Divider tabs are on top for trouble-free organization. Includes preprinted tab inserts that let you identify contents fast. Organize 8 1/2" x 11" documents within the 13-pocket file. Made from acid-free polypropylene.