Window Rollers

A professional from Orange County, NY says:
Hi I am unsure of what brand my windows are. I have been unable to find any markings but I am looking for replacement parts for these windows.

I'm looking for replacement rollers. I have used part #87-003 with decent results but I am wondering if there is anything closer than that? I run a apartment complex and we have over 360 of these windows in various sizes that appear to use the same hardware.

In addition to the replacement wheels, I am looking for latch and/or latch springs but at this time am more concerned with the wheels.

Thanks,
Nick
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A professional from Orange County, NY says:
Here's a photo of the latch
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Paul from SWISCO responded:

I believe you have a WT window that hasn't been made since the 1980's. A trick I used to give more height to the wheel like 87-003 is gluing a shim on top, then installing. I think that's your best bet, since you probably won't find the original parts.

I'm not sure about the latch. Please give us its dimensions so we can look for a replacement. Thank you!

A professional from Orange County, NY says:
Thank you Paul, I just saw your reply I'll try to get dimensions of the latch later in the week
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