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