I ordered 4 of these shelves. Overall pretty sturdy, solid wood, & heavy. Just the back piece is flimsy wood. 2 of the 4 shelves arrived with the same piece (left side panel) too damaged to use. Customer service has been very helpful in sending the replacement pieces ASAP. I put these shelves together myself, & it certainly takes more than the hour per shelf it describes on the instructions. Took me like 4 hours a shelf! A bit of frustration with some of the screws not fitting the holes perfectly, etc. Due to slight warping and imperfections, the shelves do not line up right next to each other perfectly, there are slight spaces between shelves. I wanted the "custom built" look without the permanence, so with a bit of cost savings compared to doing the built-ins, these shelves will suffice just fine in the nursery.