Balt Base component for two pneu 36 computer workstation Base Component for Two Pneu® 36" Computer Workstation, Brushed Steel CPU shelf holds towers up to 10" wide Grommet and tray for cable management Leveling floor glides Top and base sold and shipped separately Each platform has independent pneumatic height adjustment from 20" to 30" high. 16" deep platforms accommodate large monitors/printers and allow for writing area. CPU holder mounts inside frame on left or right, or stands alone.