This high capacity shelving unit from Honey Can Do features sturdy shelves capable of withstanding an incredible 600lbs. per shelf with evenly distributed. Raised grids on the backside of each shelf let you use all available space by keeping items from falling off the backside. When used with the optional commercial quality casters, this shelving unit rolls easily across the floor, then securely locks in place (casters decrease shelving capacity to 400lbs/shelf). Adjustable shelves allow you to change the configuration as your storage needs evolve. Easy assembly lets you to construct in minutes a shelving unit that will last for years. Details:Chrome18" x 48" x 72"SteelHolds up to 600lbs per shelf