Dear clutter, I think its time we see other people. With the help of this modular bookcase, we wont be seeing the likes of you for a while. This unit, complete with six storage cubes, invites you to get creative with your organization; stack them up however you like, the end result is a clutter-free home. Each cube is crafted from non-toxic, sustainably sourced, 100% recyclable zBoard paperboard. Whats more, they assemble with ease; just peel the adhesive strips and slot together... Frame Material Details: zBoard Paperboard Assembly Required: Yes Overall Product Weight: 31lb.