Durable plastic indexed sorters help organize and group documents to make filing faster. Easily stored in any standard desk drawer. Sorter allows files to remain in order even throughout your busy work day. Indexed Sorters Type: Indexed Sorter; Index Tab Style: 1-31; A-Z; Jan.-Dec.; Numbers (0-30,000); Sun.-Sat.; Number of Leaves/Dividers: 31 Dividers; Document Size: Letter.