Muscle Rack 5 Shelf Heavy Duty Steel Shelving $52.07 (Reg $80) + Free Shipping. Usually sells for $80 in stores and on sale for $62.98 at Sam's Club. This beats both prices and the lowest it's been. Dimensions are 48" W x 18" D x 72" H, has 5 adjustable wire shelves, and holds up to 800 pounds on each shelf, 4,000 pounds total.