A vertical organizer is mounted between a pair of telecommunication relay racks. Each rack has a backside which is in substantially the same plane as the backside of the other rack. Each rack has an upright defining a side positioned adjacent to and spaced from an upright of the other rack which upright of the other rack defines an adjacent side of the other rack. The vertical organizer includes a vertical trough having opposed sides fixed to adjacent uprights. The trough has a open side on the same side as the backside of the relay racks to provide a channel for positioning a plurality of telecommunication cables between the racks.