Paul from SWISCO responded:
September 19, 2016
Hello, Jack. The manufacturer of your roller (A-S) has been out of business for some time now. We might be able to still help, but you are only showing the inside portion of the wheel housing. The outside housing is probably still screwed on the bottom of the door. You might have something like our 81-004 roller assembly. You would need to remove the outside housing to confirm.
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