Each flap is moved about the score line for insertion through the elongated opening such that when {HEAD ~ the flap} is inserted beyond {TAIL ~ the free end} of the flange, the flap is biased way from the panel to connect the panel to the channel 
Each flap is moved about the score line for insertion through the elongated opening such that when { HEAD ~ the flap } is inserted beyond { TAIL ~ the free end } of the flange , the flap is biased way from the panel to connect the panel to the channel
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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