Track for bifold doors

A home owner from USA says:
April 13, 2017
Good morning
I need new tracks for bifold doors from the 1970s. the opening is 48 inches. I need the upper and lower track. I hope the pictures help.
User submitted image of their closet hardware.
Profile picture of Paul
Paul from SWISCO responded:
April 18, 2017
I believe that you have an old Benchmark metal bi-fold door that uses a 21-002 bottom threaded pivot pin with either the 21-042 or 21-044 guide pins. See if this hardware matches up. For the track, see if you can use our 21-404. This measures exactly 47" for a 48" opening. They do that to give a 1/2" of play on each end of the door opening.
Bifold Door Pivot Pin, Benchmark
Bifold Door Pivot Pin, Benchmark
21-002
$4.20
Bifold Door Top Pivot and Guide Pin, Benchmark
Bifold Door Top Pivot and Guide Pin, Benchmark
21-042
$4.10
Bifold Door Top Pivot and Guide Pin, Benchmark
Bifold Door Top Pivot and Guide Pin, Benchmark
21-044
$3.66
Bifold Track, 4' Opening
Bifold Track, 4' Opening
21-404
$12.75
Bi-fold Door Repairs
Bi-fold Door Repairs
GUIDE
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