Late 1960s Nylon top block that goes in the rail

A home owner from Albion. Pa says:
March 30, 2021
Nylon top block that goes in the rail. That excepts the pin from the bifold door!
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Dave Sr. from SWISCO responded:
April 1, 2021

Greetings. We do carry a selection of nylon pivot brackets on the web site, such as our 21-203 and 21-204, but I could not find one exactly like yours. See if you can adapt the ones we carry. Also do you know the manufacture of your bi-fold door? See if there is a label on the back side of your door. That might help narrow it down.
Pivot Bracket, Float-Away
Pivot Bracket, Float-Away
21-203
$3.57
Pivot bracket, National
Pivot bracket, National
21-204
$3.69
Bi-fold Door Repairs
Bi-fold Door Repairs
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