Pro-Tech Aluminum Step Box Pro-Tech Aluminum Step Box complete units provide storage space in a smooth aluminum body with Grip Strut® stair-tread and diamond plate or smooth doors. Standard dimensions: 25”H x 24”D and widths of 12”W, 18”W and 24”W boxes have built-in mounting brackets. External brackets are required for 30” W and 36”W box installation. 20-2450, 20-2460, 20-2470, 20-2480, 20-249018597, 22680, 24494, 27669, 30844 Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand. EXTRAS Extras The following products are meant to be used or paired with the product above. Extras may also provide alternatives to the product you're seeking. Pro-Tech Cab Guard Tool Box (Diamond Plate or Smooth Polished Lid) Polished Aluminum Slope Lid Tool Box Tool Box Mounting Brackets Still looking for the perfect part? Having trouble finding it? Call our product experts at 603-224-7370 and let us lend a hand.