ErgotronHome Workspace Lift35 Sit or Stand Adjustable Desk, Black (LIFT35 BASIC BLACK) Improve your energy and productivity by switching between sitting and standing while you work Extremely stable and solid platform Simple installation: no tools or adjustments needed Counterbalancing mechanism facilitates quick height adjustment; no cranks or motors to engage Use with laptops, all-in-one computers, or multiple monitors Space-saving design does not protrude beyond tabletop Provides 15" (38cm) of vertical adjustment Keyboard tray positioned below work surface to maintain ergonomic spacing between screen height and keyboard.