These shelves are exactly what my wife and I were looking for.  Assembly was Easy.  Took me 30 minutes each shelf.  As some reviews have mentioned screws are a bit tight but using the include stretch does the trick.  One of the rails was damaged not noticeable once put together. Once assembled these shelves are solid.  My wife loves it as it completes her office space perfectly.  I am still not done with my space but already know it is perfect.  Only regret is that I didn’t get a second one for my space.