In one arrangement, each channel section can include a flange along both sides thereof, {HEAD ~ the connection mechanism} being provided on {TAIL ~ each flange} 
provided on
In one arrangement , each channel section can include a flange along both sides thereof , { HEAD ~ the connection mechanism } being provided on { TAIL ~ each flange }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL