Roller bearing with plastic housing for Atrium Sliding Window

A handy person from Arizona says:
Hi,

This is a roller bearing assembly with a plastic housing for an Atrium window. I can't seem to find it in your list of standard parts. I don't see any markings on this particular part.
User submitted photos of window rollers.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for your patience in this matter. I wasn't able to find anything exactly like your roller, but check out our 87-163. Could you perhaps get this to work? I don't know if it will, but I think it's worth taking a look at all the same. Let me know.
A home owner from Gilbert, AZ says:
Did anyone come up with this exact roller pictured above? That is the same ones that are on all of my windows.
Thank you, Greg
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