Searching for Internal Brace for support bar

Thanks for writing in. I am afraid we don't have an exact match for this roller, nor any of its specific components. Our 81-246 for Sliding Glass Doors is our closest match. I am not sure if this will work, but review the dimensions below in comparison to your old roller and see if you could replace it with this. Let me know what you think.

Alternate image for 81-246