Dave Sr. from SWISCO responded:
June 7, 2017
There are two possibilities. The first is that this portion of your roller attaches to a bracket that installs freely in the door. See our 84-074 and let me know if that matches up. The second possibility is that this portion of your roller attaches to a corner built into the door. This is an old, discontinued door that is no longer made. I'm afraid we do not have any options in that scenario.
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