Product is incorrectly listed as wood.  It is laminated particle board (sawdust and glue).  The pre-drilled holes are misaligned, causing the completed unit to be misaligned.  The rails for hanging folders are made of a soft plastic, that I do not expect to last.  Unit seems specifically designed for hanging folders, as I would not trust the bottom panel to support anything over a couple of pounds, over an extended period of time.  Instructions for construction are extremely easy to follow.