A well put together shelf system. It took @ 2 hrs to build solo and being very careful. As others described some of the shelves sagged under a full load of DVD/BR disk but the company included support plugs work great when used with the dowel pins supporting the shelves. The only drawback is if you want to move the shelf later the plugs are very difficult to remove.  Do not use a high speed power screw driver unless it is variable and you keep the RPM's low or you can damage the vertical pieces when attaching the back panels. Follow the directions fully and you will be pleased with the results. Delivery was three days faster than the site estimated.