Beautiful unit, just what we needed!  The measurements listed on line were correct, which was important because we wanted something to match the height of our windowsills, and these units sit nicely under them.  Easy to assemble, and after making sure everything is screwed in well/tightly, the bookcase feels very sturdy.  The legs have little plastic/rubbery pieces that actually rest on the floor, which is great for protecting our wood floors from being scraped by the wood legs of the bookcase.  The unit also slides nicely on the plastic/rubber pieces, which was very useful in placing the bookcases.  
Easy to assemble by myself.