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