this shelf unit goes together in minutes. some of the areas are open in the back. some have backs. and these are stackable. you can make them as high as you want. great for kids' room. they are cool because you can get the little fabric bins and put awards if here, and pictures, photographs, a nice-looking setup. >>dave: different toys. >>guest: these are great for office, or perfect for a basement. the closet is the key. if you have an older room with just a bear, but you have so much wasted space. this is a starter kit. this goes together in 40 minutes, you can put these in easy with a support in the back and this system hangs off of that, but, the great thing, this