Top and Bottom Door Tracks

A quick learner from Houghton Lake MI. says:
I am replacing the top and bottom track a of Stanley 36" bi-fold mirror door.
The top track is 36"Lx7/8"D x 1 1/8"W. The bottom track is 36'L x 1/2" D x 11/8"W. Can I use track part 21-401 for top and bottom tracks and what other hardware do I need?
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Paul from SWISCO responded:


For your Stanley 36" mirror bi-fold door, you'll need the 21-452 track, which comes with the 21-174 roll guide and 21-175 pivot bracket. Take a look and compare the specifications of these parts to yours. Thanks for posting. 

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