Stack-on storage for HON 38000 Series attaches to your worksurface through wire management grommets. Each piece features cable management ports and tracks that run through hidden channels for a neat, organized work environment. Core-removable lock is located on the underside of stack-on shelf. Keyed alike cores must be ordered separately. Multimedia organizer insert is available to store work in process, letterheads, envelopes, CDs and supplies. Sturdy, tubular mounting rack has been engineered to stay fastened to the beam. Modular components free up work space and provide orderly storage well within reach. Stack-on storage can be arranged and rearranged for changing workflow.