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