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