Storage Wall Unit in Dark Chocolate Black In The Small Space Collection By Bestar Within a compact space, choosing the right pieces of furniture is crucial in order to feel relaxed and comfortable. Maximize every square foot of your room with Bestar's Small Space units! This Storage Tower set includes one 20-inch Tower, one 19.5-inch Add-on Tower and two 9.5-inch Add-on Towers. Each tower features 2 fixed and 3 adjustable shelves. The top and the bottom shelves of each tower are fixed. The doors can be installed between 2 of the 3 adjustable shelves for a unique design. If the 20-inch Storage Tower and the 19.5-inch Add-on Storage Tower are connected together, the doors can't be installed at the same height. Assembly Required. Wall Unit 1