This says 24' for the X213 floorplan and specs... We almost got one of these in the 2010 year. Was going to be the perfect trailer for the two of us. They were having issues then with the rear slide being so large it would get water leak real easy and also the rear slide would get out of level real easy and do damage to the inside seat cushions when being put back in. I think all of those problems was fixed in the 2009 model. We was going to pull this trailer with our F150 truck.
Other folks said you could sleep in the bed real easy left inside like when you pulled off the road at a rest area etc.
I even had plans drawn up to convert the Bunk Bed room into a office/computer/radio ops area complete with desk and hutch
This is from a Trailer Life mag report on F150 towing the X213