Wheel replacement for patio door

A home owner from Maple ridge British columbia, canada says:
No markings are noted on the parts, these are shoot and would rather not have to replace the entire door. If the pictures are not clear I can try to tAke more.

Thank you,

User submitted photos of a patio door roller.
Profile picture of Paul
Paul from SWISCO responded:
Thanks for posting! There are a few possibilities, depending on your dimensions. It's hard to tell what they are based on your photos. Check out our 81-030 or 81-138 and see if either of these could work.
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