1970's Metal Bi-Fold Door Replacement Track

A home owner from St. Louis, MO says:
March 30, 2020
Can you tell me which track I should try to replace on my 1970's Metal Bi-Fold Closet Doors? I can't tell from the pictures if I need 21-401 or 21-452. Attached in my pictures are the doors, the track and hardware off one side of the doors.
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Bob from SWISCO responded:
April 1, 2020

Your pins appear to be our 21-001 and 21-007. If so, then the 21-401 Track would be the right match.
Bifold Track, 3' Opening
Bifold Track, 3' Opening
21-401
$8.71
Bifold Door Guide Pin
Bifold Door Guide Pin
21-007
$3.87
Bi-fold Door Pivot Assembly
Bi-fold Door Pivot Assembly
21-001
$6.95
Pivot Rod Clamp
Pivot Rod Clamp
21-154
$1.46
How to Install Bi-Fold Closet Door Pins
How to Install Bi-Fold Closet Door Pins
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