Pella exterior sliding glass door hardware.

A home owner from Jamestown, KY says:
Need to replace roller assemblies for older Pella exterior sliding glass door. See attached photo. House was built late 70's early 80's and guessing this is original door. Can you tell me which part number I need to order?
Pella exterior sliding glass door hardware.
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Tom from SWISCO responded:
I'm not sure. Is there any way we can see the roller unit out of the door?
A professional from CA says:
Pella makes 2 types of doors. The vinyl one (designed by Viking Industries - crappy) which is clearly not this, or the wood door that uses either (81-098 or the generic 81-249 without the flange) or 81-244 with the flange. This obviously has no flange.
A home owner from Jamestown, KY says:
Unfortunately the door is located in a lakehouse 3 hours away. I'd really like to order part before going down next. Can you make your best guess?
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Dave Sr. from SWISCO responded:
Like our friend from California mentioned, it could be the genuine Pella 81-098 or the generic 81-249. Take a look and see what you think.
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