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