there is no consistency in model numbers vs. box length vs. total length, in the RV Industry.
some manufacturers do match model number and box length but some don't.
my advice is to never rely on the model number for the length of anything.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC