This is the 71x71 version with them stacked on top of each other. You can leave them as 2 separate ones if you want. I am totally happy with this purchase. It arrived very quick and I put it together myself. Probably would have been easier with 2 people but it is totally doable. Took me about an hour and a half. The instructions are pretty good. Ive put enough things together that I could figure it out. The shelves are just thin particle board. I plan to paint with an oil based paint or poly to keep it lasting longer from accidental spills, moisture etc. Overall this thing is sturdy once you put it all together. Not sure how well it holds up time will tell but I would recommend based on these things.