DIY Your Bookshelf: The unique structural design allows you to combine this wall-mounted ladder shelf at will. If 2 or more bookshelves are used together, there are various combinations for you to choose from. Feel free to DIY your own style Sturdy and Stable: The wall mounted ladder shelf is made of premium particleboard and elegant matte black iron pipes, giving the shelf strong sturdiness. The bookcase can also be bolted to the wall for added stability 5 Tier Bookcase: The bookcase consists of 5 tiers of 9.4" x 23.6" shelves arranged one after the other, with each tier 12.6'' apart. Unique design that makes the most of vertical space is ideal for small areas Multi-Use Ladder Shelf: The 5-tier open shelves can be used as a plant rack, bookshelf, decorative picture and display stand or storage shelf for any rooms you need. It fully meets your different needs Easy to Assemble: Easy to set up in several steps. With the detailed instructions and clearly numbered parts, it takes no time to assemble the ladder shelf bookcase