Two-panel, add-on set adds length to the 8' Balt Great Divide Wall System. Expandable, mobile, modular wall panels adapt to the changing needs of any classroom or other educational environment. Fully assembled design offers the ultimate in convenience. Simply set up, arrange and go. Tackable, gray fabric panels are framed in 16-gauge and 18-gauge steel. Hinges lock in a variety of angles for maximum flexibility. Panels roll easily on dual-wheel 2" casters with spring suspension mechanism.