5-tier shelving rack certified for outdoor use and includes 4in. Casters NSF and outdoor certified Holds 500 lbs. per shelf (evenly distributed) on included feet levelers Holds 800 lbs. total (evenly distributed) on wheels Includes (4) 4in. x 1in. wheels—2 locking, 2 non-locking The TRINITY 5-Shelf Steel Mobile Outdoor Wire Shelving Unit features an open-wire design for optimal product visibility and air circulation with less dust accumulation. NSF certified for outdoor use. Holds 500 lbs. per shelf on included feet levelers. Also includes (4) 4in. casters (2 with brakes) for easy mobility; holds 800 lbs. total, using casters. Easy to assemble without tools.