dual rollers

A home owner from Iowa says:
I could not find the patio door manufacturer or part numbers on the door or rollers. Could you please help me identify these? Measurements are approximately 3"x15/16"x1/2" Thanks.
User submitted photos of patio door rollers.
Profile picture of Paul
Paul from SWISCO responded:
This looks a lot like our 81-155 dual patio door roller assembly. Check it out and see what you think.
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