Johnson Hardware: Door Hardware

*Built to last  *All door types are covered  *Great user reviews

Hardware, rollers and tracks for pocket doors, wall-mount, bypass, multipass, and bi-fold doors, including beam tracks, bottom guide tracks, and ball-bearing hangers.  Commercial and residential grade.   Have a look at the heavy gauge metal in the closeup photos and you’ll see these are made to last.  Nice and simply organized website with online store:
http://www.johnsonhardware.com/index.htm
Find a dealer by zip or map:
http://www.jhusa.net/distributors/search_interface.aspx
or Amazon:
Dozens of Product on Amazon