The method 10, comprising drawing {HEAD ~ air} into the intake housing primarily from {TAIL ~ an area} alongside one or both sides of the grain bin extension 
The method 10 , comprising drawing { HEAD ~ air } into the intake housing primarily from { TAIL ~ an area } alongside one or both sides of the grain bin extension
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH