Panelmate Waterfall Sorter OrganizerUnclutter work areas and expand storage with versatile organizers. Fit panels up to 3 1/4" thick (mounting hardware included). Strong welded steel construction with hardened epoxy finish withstands active offices. Compatible with Safco® Gridworks® Office Organization Systems. Removable dividers form up to six slots. Panel Accessory Type: Organizer; Width: 9"; Depth: 12".