Glass patio door wheels replacement

A quick learner from Deal says:
May 10, 2017
Bought in 1990 Anderson
Marking on door ps. 11 8R oper
48 x 78
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Paul from SWISCO responded:
May 16, 2017
Your door was made at the time Andersen was changing from using the 81-018 roller to using the 81-128 roller. You will need to remove door and look at the roller to confirm which is the better match. I'm afraid there's no other way.
Sliding Patio Glass Door Tandem Roller
Sliding Patio Glass Door Tandem Roller
81-018
$8.70
Andersen Sliding Glass Door Roller
Andersen Sliding Glass Door Roller
81-128
$18.95
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