The embodiment of the apparatus or method that uses the air cup relies on the natural resistance to {HEAD ~ flow} of {TAIL ~ the loose fill insulation} to create a pressure drop 
of
The embodiment of the apparatus or method that uses the air cup relies on the natural resistance to { HEAD ~ flow } of { TAIL ~ the loose fill insulation } to create a pressure drop
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH