Review on 📚 Versatile Wall-Mounted Floating Shelves: Space-Saving Storage for Video Games, CDs, DVDs - 34 Inch, Set of 3 by Kelley Perkins

They really can only be placed vertically. If you go horizontally, make sure every section is filled or they'll just fall over. They aren't very well constructed and don't really work like they look in the photos. If you saw that you have 5 DVDs instead of 6 horizontally, they will tip over and fall back. They made something that looks great but doesn't work very well.