You are correct. It is a Tioga. We almost bought a Thor and got the Tioga instead. I had thought it was aluminum and not rubber and Fleetwood said they thought it was aluminum also and there would have been a rubber plug there. I'm tempted to just fill it with roof sealer since no one says they have anything to plug it.
It's got a cover over it now (under about a foot of snow) but I might be taking it on a trip down south in a couple of weeks and will have to have it sealed up before that. If water gets in there and freezes it could cause some damage.
