20 Furniture, namely, display stands and display boards; point of purchase displays; Freestanding exhibition booths, exhibition display stands and exhibition furniture, namely, display racks, display stands, display cases, tables and display boards; furniture, namely, display units; freestanding display systems, consisting of panels and other load bearing structures, panel walls and boards, tables, shelves, cabinets, and structural parts therefore; display panels and screens, namely, free-standing panel units for exhibitions, displays and partitioning; display assembly components, structural parts and fixtures used with exhibit display systems, namely, non-metal fasteners in the nature of locks, clamps, hinges, clips, bases, connecting strips, tubes and rods; Building materials of metal, namely, freestanding internal partitioning and temporary walls, roofs and ceilings and structural members to be assembled for use as exhibition booths and stands