Replacement rollers for Pellla patio doors

A home owner from Virginia says:
I have an older (and very heavy) pella patio door that need new rollers. I pulled it out (see pictures) but did not see any serial number. The door has no serial number either.
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Bob from SWISCO responded:

Thanks for posting. This looks a lot like the 81-098 Pella roller to me. Please compare.

Alternate image for 81-098
Alternate image for 81-098

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