Product review (2 stars): fan rotated the wrong direction - but was able to make it work
fan rotated the wrong direction.  I removed the two long screws that hold the bracket on, an removed the armature (the part with the shaft) and rotated it 180 degrees - this will change it's rotation direction.

I had to use the old bracket to make it fit.

This was a lot of work to do, and I can see how many people would just give up.