Johnson Hardware folding door series 1825

A home owner from Grand Rapids, MI says:
part pictured is "bottom pivot" part number 1807. This is Johnson's part no.
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A home owner from Grand Rapids, MI says:
Do you sell this part?
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Tom from SWISCO responded:

I'm afraid that I don't recognize this part. Can you tell me what it does? Would it also be possible to see what it looks like while installed? That context may help us track this down.

A home owner from Grand Rapids, MI says:
Referene # 197381: In the attached photos, The bottom pivot (Johnson part # 1807) is inserted into the outer door panel (jamb side). It provides the support for the weight of the two door panels. The flange shown can be turned to adjust the height of the door panels by extending or retracting the threaded bolt. Hope this helps. Thanks.
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Paul from SWISCO responded:

I believe you are looking for Johnson 23-151 bottom door pivot. Take a look and see how our specifications compare to yours. 

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