Through an air inlet at the side of the chamber, air is drawn in induced by {HEAD ~ a ventilator} like {TAIL ~ impeller rotor drawing} air in through a central opening spaced apart from the bottom section  
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Through an air inlet at the side of the chamber , air is drawn in induced by { HEAD ~ a ventilator } like { TAIL ~ impeller rotor drawing } air in through a central opening spaced apart from the bottom section
OTH OTH OTH OTH 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH