If it is like our 2000 16 ft SD DLX, with the small 3 way fridge
loctaed below the stove top, ?
Ours had a sheet aluminum baffle screwed to the top skin of the fridge
, and to the vent opening. It was all sealed with metalic dict tape. That is there to seal off the back of the fridge
which is open to the outside, from the inside of the camper.