Great standing desk ‘converter'! No assembly required easy to adjust (comes up easily by pushing handles and raising up, and can be pushed down by holding handles and putting weight on desktop to lower it, like an adjustable-height desk chair). This may not work for very tall people however, depending on how tall your desk is to start with. My desk is 30”, and the converter is right for me fully extended, but I'm only 5'7”. Extends 15.5” total, base surface to converter top surface.