Searching for Heavy duty bifold track and hardware

A quick learner says:
I would like to replace both tracks and upper and lower brackets on my bi-folds. I have four panels for my 5 ft. Opening. The doors are very heavy as they are 6-panel oak. I will attempt to email a picture.
bifold guide
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Paul from SWISCO responded:
Thanks for your photo. We actually carry the newer hardware for what you are showing us. For your track, our 23-455 is worth considering. The bottom pivot bracket can be substituted with our 23-312 and for the door fittings, our 23-121 top pivot guide should also work for you. Lastly, for the bottom pivot, our 23-151 may be used as a replacement. I encourage you to review each part to see if you agree.
23-121 : Top Pivot Guide, 7/16
Top Pivot Guide, 7/16" Diameter
23-121
$1.49
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23-151 : Bottom Pivot
Bottom Pivot
23-151
$1.49
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23-312 : Pivot Bracket
Pivot Bracket
23-312
$1.97
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23-455 : 60
60" Bifold Track, 4 Door (7/16" pin)
23-455
$16.33
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