Replacement rollers for Pellla patio doors

Question

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.

Bob · Accepted Answer

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

Alternate image for 81-098