Ok full disclosure...the FIRST SET CAME BROKEN...1/2 of it. I just emailed wayfair. showed the problem, sent a photo of 1/2 of the shelf broken. THey said keep the 1/2 that's good and they sent me another one fully intact! Awesome. I love these things. I purposefully put books that I'm "struggling" to finish between them....GET IT - PUSH 'n' PULL #thestruggle