That's what is says on the side of the TrailManor and that's what it says on our Virginia DMV registration document.
We had a discussion with the RV park where we first used our TrailManor. The fact is that they hadn't seen anything like the TrailManor before, so they called it a pop-up. Having owned several pop-up campers, we were able to convince them otherwise. The registration folks were very nice, and they finally said, "The people who own the campground are not campers, so they don't know the difference. They say if it's under 27 feet, it's a popup."
Since our TrailManor 2720 SL is 27 feet when opened, they agreed to classify it for what it is - a travel trailer. Now, when we register, I tell the reservation folks that we have a 27' travel trailer. There have been no problems since our first time out.
Happy Trails!