Searching for Nami 31761A tandem nylon rollers

A quick learner says:
July 11, 2022
This roller set has 31762A stamped on the side the rollers are nylon 1 1/4 Dia. I for got to measure the width and height but the mounting holes are 5 3/4 on center. Who ever in stalled this door did not use any hardware to secure the stationary door and I'm not sure how it was locked in I would be very happy if you could send me a blown up view of parts and assembly if you have them. I need two roller assemblies thank you.
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Tom from SWISCO responded:
July 15, 2022

Hello! Your roller appears to be a good match for our 81-170. I feel pretty confident that this is what you want, but since some of your measurements are in question you may want to look over ours just to be safe.

These typically just screw in. Our 81-170 unfortunately also does not come with fasteners so you may want to triple check to be sure there aren't still screws in the bottom of your door. I don't know how else these could possibly be installed. 

Alternate image for 81-170
Alternate image for 81-170
A quick learner says:
July 15, 2022
Thank you, but with further research I found an exact match. Thank you again fur your response.
Offset Mount Roller Assembly, Nylon
Offset Mount Roller Assembly, Nylon
81-170
$44.70
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