Our Pi Stacking shelves can grow with you, your storage needs, and your stamp of square footage. Shelving can be stacked vertically, nested horizontally, or arranged to your liking using a combination of both. Modular pieces are sold separately to give you the freedom to create the design that works for you and your space. CARB P2 composite core Features our environmentally sensitive water based finish SKU7020-703-137020-701-13 (x2)7020-702-13 (x2)7020-705-13 (x3)7020-704-13 (x2)