I've had this case for about five years now I think, and boy did this thing take a beating. I've used it for all kinds of rack gear and it has seen a handful of countries, tens of dozens of venues and many, many thousands of kilometres in the back of the car, wedged in between, or underneath guitar cases, cabinets en loose gear.
The black panels are made of plastic, which worried me a bit in the beginning, but this material has absolutely proven itself over time. Added advantage is that this case is fairly light weight.
So if you're looking to score a compact, easy to carry and sturdy as heck 3U case: don't hesitate and buy it!