Shower door hanger/roller

A contractor from Media, Pa says:
I am having a hard time identifying this sliding shower door hanger. I found the wheels, they are marked 688rs, but that number does not have a hanger.
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Emily from SWISCO responded:

Hi there!

We don't carry this exact roller assembly, but look over the dimensions for our 10-121, 10-152 and 10-153 to see if any can be used as a substitute. 

10-121 : Premiere Shower Door Roller Assembly
Premiere Shower Door Roller Assembly
10-121
$3.38
VIEW >
10-152 : Shower Door Roller Assembly
Shower Door Roller Assembly
10-152
$4.26
VIEW >
10-153 : Frameless Sliding Shower Door Adjustable Hanger
Frameless Sliding Shower Door Adjustable Hanger
10-153
$5.07
VIEW >
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