A:
Yes you would be able to stack the Safco Onyx trays 6 high. If you need any assistance in placing an order for this tray, please feel free to call 800-333-3330, we will be happy to help. You also have the option to order online with Staples.com by entering the item#147953 in our search bar.
Answered on 3/5/2013 by Linda from Staples