This Two Tier Box Storage Cart is a free standing unit designed to store up to eight sizes of boxes. Sizes can range up to 36" x 42" flat size. The Box Storage Cart accepts casters, making it mobile and ideal for areas near packaging stations. The sturdy ½" solid rod wire dividers support heavy weight while solid 2" square welded base frame provides a solid base to support up to 800 lbs. The second tier is a 14-guage sheet metal tray with wires to store smaller cartons or other supplies. Casters can be added to the cart to make the Box Storage Cart portable. Optional extension uprights and a third shelf are also available.