Window sliders, no markings

A home owner from California 92648 says:
December 1, 2020
Need better part, works fine on smaller (lighter) windows but larger (heavier) windows are hard to slide. Hope you can help. Thank you,
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Tom from SWISCO responded:
December 4, 2020

Our 87-190 is similar in design, but I can't quite make out your exact dimensions from these photos. I recommend carefully reviewing the measurements we show for this roller to see if it will work for you.
Double Roller Assembly, 1/2" Nylon Flat
Double Roller Assembly, 1/2" Nylon Flat
87-190
$1.97
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