I was looking for drawer units where the contents of each drawer is visible and these fit the need exactly.  Although made of particle board, they look great and fit together perfectly.  ClosetMaid made it super easy by providing easy to read instructions and pilot holes or indents for every single piece of hardware.  It is rare to find a furniture product that the customer is required to assemble where everything fits together perfectly.  The finished product is very sturdy and professional looking.  I put 6 of these together, after the 2nd one, I didn't need to look at the instructions anymore and put each one together in ~ 1/2 hour.