ACCO - ACC15036 Classification folders offer better functionality than most binders and pocket folders when you need to keep your letter-size business files organized. This document folder functions as the perfect file organizer, complete with tabs on the cover and dividers for easy titling. Tyvek-reinforced expandable file gussets provide maximum durability. 1" size fasteners match the number of folder parts. Folder offers six parts and expands to 3".