Jasmine from SWISCO responded:
January 23, 2024
Thanks for reaching out! The 21-044 Bifold Door Top Pivot and Guide pin is used as either a top pivot or as a bottom guide pin. The bottom adjusting pivot pin is the 21-002. You may also need the 21-277 Bifold Track Bumper. Although, you'll need to double check your existing hardware to confirm that your set up uses one. The compatible track is the bi-fold aluminum track which comes in lengths that can fit a few different opening sizes. They are listed as the following product codes, 3' (21-401) , 4' (21-404), 5' (21-402) or 6' (21-403). Dimensions of the bifold track.
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