{HEAD ~ A resilient vinyl bumper insert} is formed with {TAIL ~ T} shaped in section projections which interlock in the outer grooves of the channel thereby securing the bumper to the channel 
is formed with
{ HEAD ~ A resilient vinyl bumper insert } is formed with { TAIL ~ T } shaped in section projections which interlock in the outer grooves of the channel thereby securing the bumper to the channel
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH