Trying to figure out if you have this roller. It is a mirrored closet door. It slides in and out of its assembly. From the top to the bottom it is 3.25 inches. From side to side it is 3 inches.
Paul from SWISCO responded:
April 22, 2016
The part in your photo looks like our 23-225 mirror door roller. Check it out and see what you think.