5 Tier 6000lbs Heavy Duty Adjustable Storage Rack Metal Shelf Wire Shelving Unit Chrome color:Chrome + Iron+Plastic Is there an external power

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5 Tier 6000lbs Heavy Duty Adjustable Storage Rack Metal Shelf Wire Shelving Unit Chrome color:Chrome + Iron+Plastic Is there an external powerSpecification Product Information Product Name: 5 Tier 6000lbs Heavy Duty Adjustable Storage Rack Metal Shelf Wire Shelving Unit with Wheels & Shelf Liners 82" H x 48" L x 24" D Chrome Main Color: Chrome Main Material: Iron+Plastic Product Dimensions Assembled Length (in.): 24. 00 Assembled Width (in.): 48. 00 Assembled Height (in.): 82. 00 Weight (lbs.): 83. 20 Package Size Length (in.): 48. 40 Width (in.): 24. 90 Height (in.): 8. 60 Weight (lbs.):