20 [ office furniture; boxes, cases and case frames, racks, racking, cabinets, boards and panels, all being for storage, display and/or protection of all types of products, and all being items of furniture; boxes, racks, racking, case frames, cabinets, panels and extendaboards for use therewith, all being for storage, display and/or protection of all types of products, and all being composed of plastics materials ]