Bottom roller from a 17 year old aluminum 8' sliding patio door . No numbers

A contractor from North Port Florida says:
Need to find replacement rollers for my 8' sliding patio doors
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Bob from SWISCO responded:

Greetings. I believe this is just the inner portion of the roller. The outer housing may still be in the door. Can you remove the entire assembly and show it to us put together? From there I'll do my very best to find what you need. 

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