Replacement rollers for sliding glass door

A home owner from South Carolina, USA says:
Replacement rollers for 8'x3' sliding glass door

I measured the roller unit:
31/8" long
1 1/16" high
11/16" wide
1 1/4 diameter of roller
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Casey from SWISCO responded:

Hello,

Your photos and specifications appear to match our 81-056 roller. Take a look and let us know if you need anything else. Thank you! 

Alternate image for 81-056
Alternate image for 81-056

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