Adjust your work space up and down with the push of a button using the Electric Sit to Stand Workstation. Powerful electric motor lifts up to 60 lb. on the platform vertically from 6-3\/10" to 23-2\/5". Large platform measures 35" wide x 21" deep and holds two 24" monitors. Desk riser also includes a keyboard tray. Grommet hole centered near the back edge mounts optional monitor arms for single and double monitors or it can be used for cable management. Electric mechanism is CE\/UL certified.