Your trailer has a steel frame, dealer may have been talking about wood studs in the walls. The specs show this, looks like some aluminum framing in the from and rear walls.
Tuffshell, vacuum-bonded laminated floor, roof and sidewalls with wrapped, aluminum-cage front & rear walls.
Here is a like to Jayco for the specs on your trailer.
https://www.jayco.com/tools/archive/...s-and-options/