Here's exactly what you are looking for. Industrial strength, scalable, and you can put them on wheels. I recommend getting some better casters than Can Am offers or the Can-Am caddy though, because when these cabinets are full they are heavy.
Also be sure to secure the cabinet or use the hardware so that only one drawer can be opened at a time because if you open the top two drawers of a three drawer unit, for example, and it's not secured, the cabinet will tip over.
http://www.can-am.ca/index.html
Also be sure to secure the cabinet or use the hardware so that only one drawer can be opened at a time because if you open the top two drawers of a three drawer unit, for example, and it's not secured, the cabinet will tip over.
http://www.can-am.ca/index.html