Delmar roller replacement

A home owner from USA says:
Hello Swisco,
Please find attached a picture of the roller I am trying to replace. It has one screw in the top.
Any help would be appreciated.
User submitted a photo of a patio door roller.
Profile picture of Paul
Paul from SWISCO responded:
Hello! This looks like our 81-138, but you will need to compare our dimensions to yours to confirm that they are the same.
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