Omnimed 307100 small acrylic workstation riser, 18″ w x 8″ d x 10″ h, clear small workstation risers are ergonomically designed and constructed of clear 0.5″ acrylic for strength and durability. These moveable shelves provide added work surface both on the shelf and underneath the riser. Units measure 10″ h x 18″ w x 8″ d.