Could someone define the acronyms of 5th wheel models?

ROFLMAO is what I do when they tell me the price

They are model identifications and mean different things to different manufacturers.

Typically;
FL - front living
RL - rear living
RE - rear entertainment (TV in rear)
TS - triple slide
QS - quad slide
FK - front kitchen
MK - mid kitchen
RK - rear kitchen
FB - front bath
BH - bunkhouse
BR - bonus room
SA - side aisle

mine is a 29FKCS.

Front Kitchen,

29 for a 31 foot trailer plus tongue.
C could mean Fiberglass sided.. as metal was standard. and fiberglass was extra charge
S for Trailer. or nothing.

Coachmen Cascade Premier

factory weight tag is a LIE... 7,500 when its really 8,300 EMPTY.

Mine is an FLR
Front Living Room

I read an article, possibly in Trailer Life or Motorhome magazine, that seemed to explain the model numbers and letters. They represented just what each manufacturer wanted them to represent.

The one thing I know if it has a B it is usually a bunk model. Mine a 315 RST and I have no idea why or what. Good Luck

I compared two, RL and RE. I looked like one was rear living (couch was at the back) and the other was rear entertainment (TV and cabinet with window at the back).
Ben

I'm with you. To many mfg out there using different letters meaning different things, and I'm not sure they all have a logical meaning. I can add one more to your list- S is for slide. I can usually come close so I'm not wasting my time looking in a RK when I want a RL.

Good luck! There is from what I see no rhyme or reason to RV nomenclature. It could mean number of slides, number of beds, placement of kitchen,living or bathrooms.