Replacement Rollers for Sliding Glass Door

A home owner from North Carolina says:
Can you provide me with the recommended replacement part for these sliding glass door rollers? I believe the brand of sliding door is Guardian. I cannot find any identifying marks on the rollers.
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Casey from SWISCO responded:

Hello,

Take a look at our 81-156 or 81-156SS stainless steel version. Review the dimensions on our product page and see how they compare to yours. Thank you!

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