Y'know, I have no idea.
They come from China and she (I) picks them up in LA. From the catalog that I saw there were four "techno" A/V rack styles. Two featured maple (?) and two high gloss black laquer, in addition to silver metal uprights and glass or wood shelves. The black ones - one had square metal posts and the other round (that's what I bought). The maples were square posts with wood accents and an oddly shaped tapered version that I saw at the warehouse. Kind of an "A" shape except the back side was completely vertical with the front sloping back to the rear - resulting in shelves of decreasing depth as the rack ascends. I'm trying to fix my scanner so maybe I can post some pics soon.