The product is well-priced and well-engineered, good-looking, sturdy, and perfectly sized for a stereo system to fit properly; however, one of the support tubes that is placed in-between each glass shelf, is not the same size as the others. They included one support tube which was different from all the other support shelves in length. In other words, there were 4 small lower tubes that were correctly sized, 4 medium tubes that were correctly sized, and only 7 of 8 large tubes that were correctly sized. There was 1 of the 8 that was about 1/4 inch shorter than they other 8, which means there is no way to assemble the product properly... The 1 support tube is simply too short, and cannot support the related corner of the unit properly, so the whole unit is basically unusable. In fact, if I tried to tighten that specific corner an extra 1/4 inch beyond what it supposed to be, I'm sure it would have smashed the glass of the related shelf, and broken it all over the place. My guess is that this one in-correct tube was meant to go in a different shelf unit, that needs a different sized tube, but was somehow included into my unit by accident during packaging at the factory. I've contacted the company that distributes the thing, and am waiting to receive the proper part, however, I will return it to Amazon if the proper part is not received in another day or so. It's too bad they can't get their act together on something so basic as including all the properly sized parts, because the unit is easy to assemble, of good quality and value, and looks nice...Update 11/29/19: Crystal sent me the correctly sized support tube, and the unit is now assembled and complete. I really like it very much. It is solid, good looking, and nicely priced. Also, TAVR customer service was great. They actually answered the phone almost immediately, and we're very helpful. I strongly recommend this product and this company...