Aspects of the present disclosure relate to a fiber management structure including a splice tray. The splice tray includes a front side and a back side. The fiber management structure includes a first attachment module that mounts by a location-selectable connection to the splice tray at a selected mounting location. The selected mounting location being one of a plurality of different mounting locations at which the first attachment module can be mounted to the splice tray. The first attachment module includes a fiber containment wall that projects upwardly from the front side of the splice tray when the first attachment module is mounted to the splice tray.