Sliding glass door rollers replacement

A home owner says:
August 3, 2016
Hello! I am having much difficulty identifying the brand name of my sliding glass patio doors. I need to replace the rollers:

AAMA SPONSORED
MANUFACTURER STIPULATES CONFORMITY TO ANSI/AAMA 402.9

CODE: HA-1

SPECS:
SCD-A2
SCD-A2-HP(68)
SCD-A2-HP(83)

SERIES: SLIDING GLASS DOOR
User submitted image of their door hardware.
Profile picture of Paul
Paul from SWISCO responded:
August 4, 2016
Hello to you, as well! Thanks for posting. I believe you have a Harcar patio door, but unfortunately, they went out of business around 1990. It's hard to tell exactly what you have based on this picture, as this is just the inside portion of a complete roller unit, but I'd wager it's the 81-261. I would recommend checking your outer housing just in case. It should still be installed in the door.
A home owner says:
August 4, 2016
Thank you, Paul!
A professional from CA says:
April 15, 2020
Looks closer to 81-023 to me. What does the top look like?
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