http://trailmanor.com/WebDocs/Showro...ifications.htm
For a 3023, the actual length closed is the "towing length closed" of 22'9", and the overall length open is the "body length open" of 26'5".
They say it's the "equivalent" of a 30' trailer because the ends stick out over the tongue and the bumper when open.
I've measured my 2720 and the factory specs are just about right-on.