Mainstays Black Corner Shelf Set of 2 Medium Density Fiberboard. The two decorative radial corner wall mount shelves make space utilization possible from any corner. It's an efficient use of space without having to sacrifice floor area. A sleek black laminated finish and creative design make these floating corner shelves a great way to jazz up your home or office décor. Easy to install with no visible connectors or hanging hardware. Each shelf holds up to 5 lbs. Product dimensions 9.45 in x 9.45 in x .98 in.