Parts search tandem roller assembly

A home owner from Tulare, CA says:
I am looking for a sliding glass door tandem roller assembly photo attached. Door is a mid 1980's Window Master brand. Current roller data: wheel diameter 1 1/4", wheel width 11/16. Outer frame length 3 1/8, width 11/16/ height without front 'U' shaped bracket for mounting screw 1 1/16, height with bracket 1 7/16. Any help would be appreciated.
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Lauren from SWISCO responded:

Hello, thank you for posting! 

We do not have an exact match to your roller, but start by comparing the dimensions to our product code 81-173 roller assembly. Please note that this roller does differ in design. I have provided the dimensions below to compare to see if this roller could work for you! 

Alternate image for 81-173
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