Sixteen inch brackets ship two to a pack here, which covers a single wide shelf mounted on a pair or two separate short shelves in different rooms. Each bracket is formed from high-strength steel rated to 150 pounds, a margin that handles books, kitchen tools, storage bins and display pieces without the slow sag that plastic or aluminum hardware develops. Rods reach 6 inches into the board and the plate measures 16 by 6.2 by 1.5 inches, sized to catch studs on standard 16 inch centers. Boards from 18 to 24 inches long, 2 to 3 inches thick and 8 to 10 inches deep slide onto the rods and hide the hardware completely, leaving a shelf that appears to float off the wall. A rust-resistant coating keeps the steel clean in humid rooms, and the pack weighs 5.07 pounds with anchors and screws for stud, concrete and brick surfaces included.