I would like to know how to install a bifold door without track on top and bottom. Thank you for your help.
You don't need a track on the bottom, but one on the top that guides the one end is a good idea.
It also keeps the darn thing shut (friction on the one end hitting a rubber bumper.
But, if you don't want that, Hinges for the one side and a door stop to suggest it stop there and stay.
Might be able to hold the opposite hinge end with a magnet catch I guess.
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Thank you for your answer. Do I need a special hingees and door stop?
Standard butt hinges will work for the hinged side. Readily available stop will work in the opening.
Piano or butt hinges will work where they are joined together.
But again, what is the purpose for this door?
This door will be between 2 bookcases. They will serve as a separation in a small space. I want to gain space so I don't want to add a wall.
I think you'd be happier with a regular bifold (no bottom track).
I would use Johnson 1700 hardware, not what comes in a bifold box.
The bifold actually "hangs" from the track and is guided in the track when closing.
Or, use the two panels and hang them on either side of a jamb (wouldn't need a wall necessarily (use whatever you intend to hang the hinges from).
How large is the opening? Are you going to use standard 1-1/8 byfold door units or i-3/8 interior type doors.
You can use standard door hinges where it is mounted to the jamb/bookcase/cabinet. Use the same hinges that come with byfold units for connecting the doors to one another. Install regular door stop material at sides and top. Use magnetic catches to keep closed.
It could get tricky if you are fitting the doors between cabinets etc. Every thing needs to be plumb, level and square.