Need Rail/s to replace wooden doors

A quick learner from tampa FL says:
I am replacing a wooden bi-fold doors with metal.
They are 4-feet in length total with 4 panels.
Have tile flooring and wanted to see if I can install this with just the top rail only and get by using a wooden bi-fold door bracket on the bottom. Let me know the part numbers that I need to buy.

thanks in advance
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Paul from SWISCO responded:

Metal doors aren't made to float, but you can try. For the top track, you will need two 21-404 tracks with one 21-277 center snugger. The two top spring loaded pins will be the 21-007. For the bottom corner bracket, use 23-316 and the bottom adjusting pin, 21-003 with a 21-154 rod clamp. 

I won't lie to you, I'm not entirely optimistic this will work and cannot guarantee it. However if it is going to work, then these parts are the parts to do it. Good luck.

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