Cabbage Case Rack In A Case…..This case is used when you want the inner rack case to stay pristine. The innser rack has an Heavy-duty ATA shipping case built around the inner rack. Can be used for front of house shows or for conference room demo’s where you don’t want the outer case up on the conference room table. Rack shipping cases can be manufactured from 2U to 42 U in any depth you need. Every rack “U” is 1.75 inches of vertical rackable space.