The heated air then exits the grain dryer 10 through {HEAD ~ the outer perforated wall} 34 in {TAIL ~ the general direction} of arrow 44  
in
The heated air then exits the grain dryer 10 through { HEAD ~ the outer perforated wall } 34 in { TAIL ~ the general direction } of arrow 44
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH