Abstract: Non-architectural posts and beams of the kind used as cubicle backbone structures are now used to support open racks as skeletons for hanging diverse user-selected panels. The open racks have upright standards joined by spaced-apart transverse rails. A pair of brackets join an open rack to a beam. Each bracket has a beam gripping face and a rack gripping face. The rack gripping face has clefts that engage spaced-apart rails and have mass relief for light weight. Panels are freely hung on the rails and may be selected from whiteboards, bulletin boards, shelving, book cases and window panels for user personalization.