an insulation cap coupled to {HEAD ~ the main plate} to define a flame space with {TAIL ~ the main plate} 
an insulation cap coupled to { HEAD ~ the main plate } to define a flame space with { TAIL ~ the main plate }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL