If I had waited a little longer I would have answered my own question...."rod" is bendable - and a measurement was posted from a 2016 at 46 inches. I have it bent, and it is in position.
The Thor part number of the end brackets ( a pair) is 0359687. Not sure if that includes attaching hardware - not in the box, but I got separately. As I said earlier, I received two PAIRS of brackets with my rod - no extra charge....?? Since there is no way to send back ( no paperwork...😨😨 ), I will donate to a forum member who orders the rod and gets NO end brackets .....
Just send me a message with your address - I will include the additional set of fasteners I got...
Can't wait for my first shower...