Pics of 2 of the tanks I have stockpiled:
The tank that will fit on the grill has 2 small oblong cutouts, with a larger oblong cutout for use as a hand grab when carrying. The hand grab on this tank does not has a "comfort" rolled edge. Any of the three cutouts could be used on this grill hanger.
The tank(s) that will not fit have due to the circular cutout not being large enough for the existing hanger on the grill has that single circular cutout and two hand grabs, both with the "comfort" rolled edge.
I'll measure the hanger tomorrow.
Older tank, seen by date code:
View attachment 62733
Newer tank, seen by date code:
View attachment 62734