This includes all 4 pieces shown for an incredible price! They were easy to put together for one person and include wall mount brackets which I appreciate.  They look clean and the instructions for assembly were easy to follow! Delivered in 4 separate boxes so it was easy to figure out what pieces went where. You assemble each of the 4 bookshelf columns separately so you can arrange them with the drawer units and glass doors units in any order which suits you (they can also be stand alone units). VERY happy with these!