Help finding replacement for thermaline 56462 horizontal sliding window rollers

A home owner from Hampton, VA says:
May 15, 2015
Rollers are in rectangular plastic case approx 1 3/8 x 3/8.
Two sets of plastic cases are on each corner of the window with only one roller in the case.
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User submitted photos of a window roller.
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Tom from SWISCO responded:
May 15, 2015
The closest I've been able to find is our 87-036. Is this a possible match? Compare all of our dimensions to yours to confirm.
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