The present invention is directed to a one-piece corner duct that routes wires in a corner of an enclosure. The one-piece corner duct includes a back wall and sidewalls. The back wall has at least one co-extruded hinge that enables the back wall to pivot to allow the one-piece corner duct to conform to a corner of the enclosure. The sidewalls have a plurality of fingers that retain the wires in the corner duct. The fingers also maintain a cover on the one-piece corner duct to provide access to the wires therein.