Lower guide for metal bifold door.

A home owner from Herndon says:
I need lower guide pin parts that is shown in the attached photos. The label on the door says it is model "D" door with date of year 1973. The door is a metal bifold 7.5 feet high.
User submitted photos of bi-fold door hardware.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
You do have an older bifold door, but I think we can still help. Take a look at our 21-007 guide pin and the 21-001 lower adjustable threaded pin. These could be what you're looking for. Also see the 21-200 pivot bracket, 21-154 pivot rod clamp and 21-151 nylon grommet. You might also need those parts to complete your job.
A quick learner from Herndon says:
This looks like what I need. Where does the 21-151 nylon grommet get inserted in? Thanks.
Profile picture of Paul
Paul from SWISCO responded:
SWISCO part 21-151, nylinder, gets inserted in the door hole opening so pin will slide smoothly.
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