System Bin™ Wire Shelving System allows you to create a cleaner, more efficient and more organized work environment while improving workflow and minimizing lost inventory. The stationary units can hold a maximum of 2,000 lbs and the mobile units with casters have a maximum load capacity of 900 lbs. The maximum weight capacity per shelf of 48" or shorter is 800 lbs, and for a shelf longer than 48" has a maximum capacity of 600 lbs. The bins are configured across in a single unit and the sturdy steel base is water, rust and corrosion proof and is guaranteed unbreakable. Indeed, the System Bin™ Wire Shelving System is the best and the most cost-efficient alternative to those flimsy, individual cardboard boxes.