Looking for bottom slider pin

A quick learner says:
Helping one of my clients. They have 96' thin metal bi-folds and for one of the doors the bottom slider pin assembly is missing. I saw some similar parts listed, but they are not the same. Hope you can be of assistance, thank you in advance, Robert Lijs, EXIT Realty Metro.
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Paul from SWISCO responded:

Thanks for contacting us. I have come up with a list of possible replacement options for you to review closely on this page. See if your measurements match up. If not, get back to us and let us know how they differ. 

21-072 : Bifold Door Guide Pin, National
Bifold Door Guide Pin, National
21-072
$4.79
VIEW >
21-103 : Bifold Door Pin Cap, National
Bifold Door Pin Cap, National
21-103
$1.02
VIEW >
21-150 : 1/4
1/4" Nylinder
21-150
$0.35
VIEW >
23-020 : Bi-fold Bottom Guide Bracket, Roberts
Bi-fold Bottom Guide Bracket, Roberts
23-020
$5.62
VIEW >
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