Of all the variations of 19" Rack Flight Case we can design and build, the 550mm body rack is among the most popular. Featuring a body depth of 550mm and a rack pitch (the distant between front & rear rackstrip) of 511mm, these racks all feature one standard design for simplicity and ease of use. The main difference between them is the number of Units, ranging from the small & compact 2U rack, all the way up to the monster 24U for bigger projects.