Ideal storage solution for commercial use. Snap-together design assembles in minutes. Strong welded wire construction provides exceptional strength & stability. Open design allows air circulation & reduces dust build-up. Finish on surface prevents corrosion in wet, humid environments. Safeguards for freezer, restaurant, food service, indoor / outdoor, or other wet / dry storage requirements. Up to 600 lbs. per shelf (evenly distributed) when used without casters. Series Name: Alera Commercial Wire Shelving with Casters; Shelf Count: 4; Shelf Depth: 18"; Shelf Thickness: 1".