Organizer ShelfHighlights Compatible with 11" storage bins Weight capacity is 15lbs per cube shelf When used vertically, top shelf weight capacity is 35lbs When used horizontally, top shelf weight capacity is 50lbs Required tools Screwdriver, hammer Assembly instructions linked below under the "From the manufacturer" section Description Give your traditional bookshelf a modern update with the 6 Cube Organizer Shelf from Room Essentials. The cube openings are great