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