{HEAD ~ The thermal resistance} of {TAIL ~ the insulation} is determined from the known cavity depth and insulation density 
of
{ HEAD ~ The thermal resistance } of { TAIL ~ the insulation } is determined from the known cavity depth and insulation density
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH