eHemco 5 Tier Leaning Ladder Wall Book Shelf in Grey 21-5/8&ldquo;W X 70&rdquo;H Contemporary 5 teir leaning wall Bookcase Ladder, each shelf has 3 sides with 20" Width and raised lip (2"high) The shelf depths from top to bottom: 6", 8", 10", 12" and 14"; Distance between each shelf: 13" The leg is 2-5/8" W and 11/16" thickness, the third leg under the biggest tray for extra support, the screw on the top tray can be connected to the wall to hold the shelf not to move Easy to assemble,Black and White available too Overall size:21-5/8"W x 14"D x 70"H