Abstract: A vertical filing system is provided wherein documents are filed in the spaces between a plurality of filing bars contained in a cabinet by hanging the documents on pins extending through the bars and outwardly into the spaces. In the closed, filing position, the pins extending from any one bar extend into the space between bars and overlap the pins extending into the space from an adjacent bar. In the open position, any two adjacent filing bars are separated such that the oppositely coacting pins on adjacent bars do not overlap and documents can be either inserted and filed or removed therefrom. In a preferred embodiment, openings are provided in each filing bar through which pins from adjacent bars can extend, the preferred pin-opening sequence on the filing bars being pin-opening-opening, pin-opening-opening, and so on.