LOVE this shoe rack. I bought three and they were delivered in two days.  Like others have said, the back piece is just cardboard so I opted not to nail that on and it holds just fine. They each took me about 10 minutes to put together, at most.  It holds 15 pairs of mens sneakers or 15-20 pairs of women's flats/heels.  I plan to order a 4th this week!!