O&K Shelving Solution Large L Shaped Floating Wall Shelf Set of 2 (18.9 Inch Black Oak) Made of MDF & laminate. Group together or hang separately for the perfect accent for any room Picture Ledge for Photo Frames, Floating Wall Shelf, Spice Rack, Dimensions: 18.9" x 3.9" Different wall materials require different types of fasteners. Use fasteners suitable for the walls in your home. No visible connectors or hanging hardware