{HEAD ~ an input section} disposed at an upstream region of the frame assembly and defining {TAIL ~ a material flow path} running between the first and second lateral support plates 
defining
{ HEAD ~ an input section } disposed at an upstream region of the frame assembly and defining { TAIL ~ a material flow path } running between the first and second lateral support plates
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH