{HEAD ~ The channel sections} can be nested for ease of transport and {TAIL ~ storage} and can be easily assembled on site 
{ HEAD ~ The channel sections } can be nested for ease of transport and { TAIL ~ storage } and can be easily assembled on site
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH