sliding glass patio door roller

A home owner from canada says:
I cannot find any markings on the part or the door for manufacturer
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:

Thank you for your patience during this busy season. This looks like it might just be a portion of a complete roller assembly. Without seeing the whole roller, I'm not sure what to recommend. Start with our 81-002 or 81-003 to see if either of these could be what you want.

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