Cubes are Kallax (formerly Expedit) from Ikea. There are 2 units that are 4 x 2. I love that they can be Vertical and/or Horizontal. I now have an additional 58"x15" of counter area to hold my heavy tools. And when I said tools, it also includes my Craftsman tool tote!! It is indestructible and holds my framing hammer, Chip Art Board and mallet, not to mention hole punchers, sanding blocks, eyelet/grommet tools, pliers, tape measurers, tape runners, and so on.