The CL-220E Surrounds the operator with open counter space which means lots of possibilites. The Standard Desk comes with two racks below the surface - one left, one right. The furniture can be ordered in Sit Down or Stand Up versions. The Sit Down version includes 12RU per rack, the Stand Up 16RU. This design has knee space on all 3 sides, making it versatile to function in different ways.