Rollers for a Pella sliding door from the late 90's

A handy person from Ankeny, IA says:
Hi. I'm looking for a set of replacement rollers for a Pella sliding glass door. It's from around 1999 as the home was completed in August 1999. It's oak interior and I believe aluminum clad on the outside. Is there a standard replacement roller or do I need to take the door off to get a picture of the roller. Also, are there 2 or just one?

User submitted picture of Pella roller.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting, Dave. Please take a look at our 81-244 Pella Sliding Glass Door roller and compare its dimensions to your own hardware.
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