Bottom Track 95" x 24" Metal Bifold

A quick learner from Canada says:
This door is original to the house manufactured in the 1960s. Top rails still exist in the door frames but the bottom rails are missing. Will your low profile 24" rail assembly work with this style?
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Tom from SWISCO responded:

I don't know if it will or not. Can you tell me the diameter of the pin and pin caps for the parts you have now? Can you also show me the top track?

A quick learner from Canada says:
Thank you for the reply.

The pins are 5mm and do not have any caps that I can see. The doors were removed by the precious home owner and kept in storage. They kept the top tracks in place but discarded the bottom rails.

Pictures of the top track included.
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Paul from SWISCO responded:

I think I can help with this one. Your top track is actually used for wood bi-fold doors. That means you probably never had a bottom track, and instead had something like the 23-316 bottom bracket, where the doors float on the bottom. It's odd that someone would install this on a metal bifold door, but here we are.

Since your door is metal, which means it requires a bottom track, and based on the size of your pins, then I think you can probably use the 21-450 as a replacement. Look it over and let me know what you think.

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