Winholt SCAS-2436-3-AU Add-On Shelving Unit, cantilevered tubular, (3) shelves, (1) common upright, (2) cross braces, (1) hardware kit, 24" x 36", 1-1/2" x 1-1/2", aluminum construction, 900 lb shelf capacity, NSF (please note: split sleeves are not included with this product)