Quick - Shelf Hangers Three Shelf 16" Deep Wall Mount Shelving Unit Up to 500 lb capacity Simple hook through contruction allows you to effortlessly hang shelves from each other Skip shelf boards to create "double tall" shelves. Accomodates 16" wide plywood or melamine. Overall size is 16-1/2" deep X 4ft -3" tall X board length wide [Rec 5 ft max for 3/4" thick wood]