I needed a small metal rack for some computer gear, and this dinky little box was the only one small enough! I was not expecting quality for this price, and didn't get it either: The Steel Box 6 came well packed from Thomann, but out of the box it already had a dent on one side as the metal is so weak. After taking off the plastic, my next job was to wipe away all the dust - inside and out. Some paint had already come off at edges. The metal and the construction is so light, that I could probably tear the whole thing into a pieces with bare hands.
This steel box is ok for my specific use, so no complaints! But for racking music gear I will stay with K&M and such.