Seville Classics 4 Shelf, 18-Inch by 48-Inch by 72-Inch Shelving System with Wheels, NSF Dimensions: 48-inches by 18-inches by 72-inches high (75-inches on wheels) Includes 4 shelves (18" x 48"), 4 back-stop retaining ledges, 3-inch wheels, and adjustable leveling feet Weight Capacity (even distribution): 600 lbs per shelf (on leveling feet); 500 lbs per system (on wheels) Commercial strength UltraZinc plated steel; NSF Certified Easy assembly with no tools required