It should be appreciated that the heated air in the plenum chamber 28 passes though the inner perforated wall 32 in {TAIL ~ the general direction} of {HEAD ~ arrow} 42  
It should be appreciated that the heated air in the plenum chamber 28 passes though the inner perforated wall 32 in { TAIL ~ the general direction } of { HEAD ~ arrow } 42
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH