Received this tonight. got it out of the box and put it together in less than 10 minutes.  It's WAY more sturdy than the usual wire frame cubes with pathetic plastic joint connectors.  BUT... Two things to note.  If your cubes are 13 inches square, they will be a VERY tight fit into this Cube holder. They will not easily move in/out.  Also, the two sides of this cube holder are held together by metal braces at the very bottom ONLY.  The rest of the apparatus depends on particle board shelving.  This will be fine for most applications, but if you have heavy stuff inside those cubes, the particle board, is particle board. Overall, I'm OK with my purchase.  My only regret is that the interior size is not large enough for 13 inch cubes to easily go in/out. It will be a hassle to move a 13 inch cube out like a drawer. Wish the interior size was a half inch larger.