Charmac sliding mirror door--- roller/wheel only
A home owner from San Diego says:
July 6, 2016
Dimensions and size are on photo. Thank you.
Paul from SWISCO responded:
July 8, 2016
This looks like the inside portion of a larger roller unit. Start by looking at our 23-233 and see if this matches your hardware. The outer housing of your roller is likely still installed on your door, but once you get it off you can compare it to our hardware.