Double-sided, mobile panels offer a convenient dry-erase writing surface on each side. Includes a lower 7-1/2"H aluminum slatwall panel that allows you to attach accessory trays (not included) for quick access to markers, erasers and other supplies. The aluminum frames neatly dock together when joined with the included plastic connectors, making it easy to create a continuous row. Economical yet wear-resistant Dura-Rite boards have melamine surfaces. 2-1/2" locking casters, 20 -year Warranty.