In {HEAD ~ another embodiment}, the air is drawn into the intake housing primarily from an area above {TAIL ~ one or both sides} of the grain bin extension 
In { HEAD ~ another embodiment } , the air is drawn into the intake housing primarily from an area above { TAIL ~ one or both sides } of the grain bin extension
OTH HEAD 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 OTH OTH OTH OTH OTH