Solution to a common workplace problem: too much sitting. Transforms any sit down desk into and sit or stand desk. The 28 x 23 in. deep surface is raised up to 15.5 in. for ergonomic placement of laptop computer, keyboard, mouse or paper while standing. Gas strut design allows for easy custom adjustment of both desk and monitor with the twist of a knob. Fits corner workstation. For 4 holes monitor only. Sold by each.