I've purchased a number of these book cases over past decades and, as other reviewers have said, now you have to assemble the pieces rather than just unpack and unfold. But assembly went just fine. Everything fit perfectly. This new version is not, however, as stackable as the earlier ones, hence 4 stars instead of 5. The old ones had holes drilled in the top and bottom edges, and included dowels to put in the holes if you wanted to stack units and finished plugs to put in the top if you did not want to stack them. The new ones have no holes, just slight convexity in the top edges and concavity on the bottom edges. Two metal strips with 4 screws each are designed to link two stacked units up the back edge of the uprights. Stacked units would not be nearly as securely fastened to each other as the older units are--so I'm using these new ones only where one unit high is all I want.
Rating: [4 of 5 Stars!]