48 in. Sliding Door Set

The 48 in. Sliding Door Set is not designed for use with bi-fold doors. Additionally, the maximum thickness to for installing the hangers is 1-3/8".

The proper door height is 1-3/4" less than the height of the finished opening.

Adjust the roller wheels to there lowest position.

Good question. I would lay it all out on the floor. Lay down the door, attach the wheels to the top, slip the top track onto the wheels, then measure down from the top of the track and make a mark at 79-7/8. Position the bottom track on this mark, deduct the appropriate amount to give it a little space, and make a final mark for cutting. I would put the top wheels in the lowest position when you measure so the range of adjustment is bigger once the doors are installed. Be sure to measure the height of the door opening (79-7/8) at the right, left, and center of the opening to confirm it's the same all the way across. And I assume you know to make a cut with a utility knife before cutting the door with a circular saw, so as to lessen the chipping. If the doors are hollow core masonite, definitely drill pilot holes, and don't over-tighten the screws. Good luck!

96" track

Two of 24"

My best guess without seeing it is that you either simply hung both doors in the same track line or you have the offsets on the hinges hung in the opposite track, in other words reverse the doors (the one in the front move to the back and vise versa).

Yes, absolutely can you install multiple tracks to accommodate a larger opening. The only potential issue you may have would be to add some sort of travel limiter, or stop bumpers so the multiple doors do not constantly slam into each other when opening them.

I would not risk putting so much weight on it. If that weight fell on a kid, it could be very grave. The plastic wheels will be squashed within a few weeks of use.

Yes, you would be wastihng your money as I just did, this system does NOT work at all with 1 3/8 doors even when it is sold as if it worked. I am terribly dissapointed.