All the PNT bags fit in the CRJ overhead...even the 26" version. The limitation is depth. So, if you pack it and it extends much above the top of the frame it won't fit. I'd advise against putting your bag in the back (cargo area)when working the trip if at all possible. It may not show up to the same place you are going...happened to me once(got it back 2 days later) and other guys I know as well.