Sliding Mirror roller

A home owner from NY says:
February 22, 2020
Hello,
We have a 1968 sliding mirror and would like to identify and buy replacement rollers for it. The mirror itself is two panels, each 30"W x 36"H.
The rollers, two per panel, are approx. 3/4"L x 1/4"W x 9/16"H (see pictures).
The roller assemblies are just pressed into the bottom of the mirror panels.
When the panels are rolled, there is a noise as if the rollers are out of round. Can you please help?

Thank you very much for your time.
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Casey from SWISCO responded:
February 24, 2020

Our 87-006 sliding window roller shows a great deal if resemblance to your piece. Review our measurements to confirm this is a good match. 
Capitol Sliding Window Roller, 9/16" Concave Wheel
Capitol Sliding Window Roller, 9/16" Concave Wheel
87-006
$2.25
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