Does anyone have any experience of these racking systems. Looking at using 3 10U units to rack my Pro Tools HD system, patchbay, mic preamps, compressors, 1604 etc. Know they don't look amazing but could fix my portable racking problems if they do the job. Does anyone have any photos they could provide me with to demonstrate the Rig? Are they simply flightcases with Front / Back / Top lids?