replacement of the rolling door system for mirrored sliding doors

A landlord from Whitestone, NY says:
Hi, there are not numbers or manufacture on this piece. I need to order several of them. Is this something you stock.

Thank you

User submitted a photo of a mirror door roller.
Profile picture of Paul
Paul from SWISCO responded:
Looks like you have a heavy duty door roller assembly. I can't tell if the wheel is concave or convex, though, which is a very important detail. Can you confirm? In the meantime, look at our 23-070 and 23-086, which have concave wheels, and our 23-081, whose wheel is convex.
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