These went together easily and were much more robust than I ever hoped. Because I stacked multiple units together, I glued the joints and used L-brackets to affix them to the wall. They are rock solid and I couldn't be happier. These racks are wonderful, and for less than a dollar per bottle, I don't think they can be beat. The only downside, the cutouts are too small for larger bottles (Magnums, Champagne, Burgandy, and some Châteauneuf-du-Papes). Very few of my bottles fit that profile, so that wasn't a serious issue for me.