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