This Wall Shelf is designed to match the monochromatic scheme, with rustic gray oak, providing a neutral background for things you want to display. The wall shelf is built from top-grade particleboard and uses heavy-duty steel hardware, so shelves will remain straight and even, without bowing or splitting over time. By following the simple instructions that are included with the wall shelf, and by using the hardware provided, it is simple and easy to install the rack in just minutes. The tray is designed and manufactured by the manufacturer who uses eco-friendly wood-sources, manufacturing and recycling practices.