I went crazy thinking I could install my new kitchen cabinets myself. Counting 23, 23 total. I made some mistakes but overall I'm happy and they look good and I'm pretty sure they won't fall off the walls. Not soon. The pros say the best way is to align, weigh, and nail the closets together, then lift and hang them as a unit. This works well if you have crafty helpers or an electric cabinet lift. I didn't have either, so I hung them individually using a helper, a set of pony clips, and a t-jak.