We just assembled it so this is early to be writing a review, but, I can say that it all fit together well and seems solid. There was a lot of confusion on this site for q&a on the materials these are made from. To clear that up: This is primarily constructed of birch plywood. That is a good material, very different from particleboard. It is not technically "solid wood", but good quality plywood is actually stronger than solid wood. It's layers of solid wood glued together. The connection method is wood screws and pre fit dowels, which is utilitarian and should hold up well. There are horizontal dividers that are made of hardboard (a dense material similar to particleboard but harder and denser). These dividers are not taking any bending loads and not carrying much compression load, so I am not bothered by the use of this material for those parts. The bins are pretty ordinary but do feel a bit thicker-walled than real cheap plastic bins. So far so good.