Quick - Shelf Hangers Six Shelf 12" Deep Ceiling Mount Shelving Unit Up to 700 lb capacity Simple hook through construction allows you to effortlessly hang shelves Skip shelf boards to create "double height" shelves Accommodates 12" wide plywood or melamine & 1X12s Overall size is is 12-1/2" deep X 7ft tall X board length wide [Recmd 6ft max]