It is supposed to have a 22 inch bellows, and I ordered a CALUMET 4X5 CC401 from KEH, and the camera arrived today (much delayed by fires in Oregon) and the rail is only 20 inches, like my other Calumet 4x5.
Now, if the CALUMET 4X5 CC401 has a 22 inch bellows, a 20 inch rail seems strange.
I would be loathe to send it back since I waited so long for it.
I am guessing that the only difference between the CC-400 and the CC-401 is the length of the bellows and the length of the rail.

So I guess the burning question is, did I get the wrong camera?

Now, there are other possibilities as well. I could have the 22 inch bellows and a shorter rail.
I have seen that long rails are quite expensive (e.g $75 for a 26 inch rail).
And a longer rail won't do me any good if the bellows won't expand far enough.
I suppose I might be able to buy one of the cheap Chinese bellows (but I would rather not, if I don't have to).
I did not measure the bellows yet, and I am not sure how to do it properly.
The 22 inch figure seems like it could have some play in it, depending on how far the bellows are stretched.