David,
You aparently have the E-Z Slide-Out System, seemingly manufactured by or at:
http://www.hhbraund.com/rvparts_accessories.html
I didn't yet find the p/n you supplied, but perhaps you can rummage around for their phone number & beat me to the punch.
I have more research to do, but this might get you started. I did note that many "suppliers" carry the H&H product. In fact, if you click on this link:
http://www.google.com/search?hl=en&ie=I ... gle+Search
you should see the choices.