patio door wheels

A home owner from Calgary says:
My patio door's wheel are old and hard to move. Wondering if you can kindly find the replaceable part for me. The door's manufactured date I believe is 1998.

User submitted photos of a patio door roller.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting, Wei. This roller looks a lot like our 81-138. Check it out and let me know what you think.
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