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