The Nucleus-Z Explorer is an ergonomic desk that provides a built in second tier and two (2) four space rack units, as well as ample work area on the desktop surface. Built using powder coated medium density fiberboard, the Nucleus Z gives you an ample workspace within a a compact (but not too small) frame. Sturdy, stylish, and perfect for when ambition exceeds the confines of your workspace, the Nucleus-Z Explorer will change your workspace for the better.