No it does not.
Actual rod dimensions are 66" L, 28" W (fits tubs up to this size), and 1" diameter tube.
No, it is 66" L x 28" W.
No, the flangs on the ends are not adjustable.
Hello, this L-shaped shower rod is with length 66inch and width 28inch. Both depth and length can be cut to the size you want.
No, the item does not come with ceiling support but it is very sturdy and with just a shower liner have no issues of having stress to weight it down.
No, it is no needed.