Replacement patio door wheels

A home owner from USA says:
Hello, can you tell me what part number the roller is in the attached photo? I need to purchase 2.
Thank you
Double patio door roller
A home owner from USA says:
Why is my post closed? I didn't get an answer?
Profile picture of Tom
Tom from SWISCO responded:
Without knowing any dimensions, I can't say, but start by looking at 81-138 and comparing the measurements. Let us know how they differ, if it won't work as a replacement.
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