Sliding window wheels

A home owner from USA says:
June 13, 2014
Hello
The following wheels are installed on all my rooms window over 15 years ago.
I would like to know if you have these or similar to fit my sliding windows. (They are broken, rusted or missing) and no company or name tag available on the windows.
Thanks,
User submitted photos of a window roller.
Profile picture of Tom
Tom from SWISCO responded:
June 13, 2014
Good morning! I think you should start by looking at our 87-177. Carefully compare the specs we show for it to your own hardware and see how well they match.
Sun-Air Window Roller Assembly, 1/2" Flat Wheel
Sun-Air Window Roller Assembly, 1/2" Flat Wheel
87-177
$3.20
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