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. � <br /> . ' A r� � <br /> � � . <br /> � OF MIN�NESOTA <br /> CONSTRUCTION: R-VALUE : <br /> � -------------------------- <br /> CEILING SECTION ( INSUL . ) : <br /> 1 ) INTERIOR AIR FILM 0 . 610 <br /> 2 ) 5/8 " DRYWALL 0 . 450 <br /> 3 ) 14 " BLOWN INSL . 44 . 000 <br /> 4 ) EXT . AIR FILM ( STILL ) O . EiO <br /> 31 TOTAL R-VALUE : 45 . 670 <br /> J <br /> 4� U = 1/R = 0 . 022 <br /> VEN TED CEILING FRAMING SECTION: <br /> �, I INTERIOR AIR FILM 0 . 6�� <br /> 2 ) 5/8 " DRYWALL 0 . 450 <br /> 51 3 } 10-1/2 " BLOWN INSL . 38 . 000 <br /> l� AIR 4 ) EXT . kIR FILM { STILL ) 0 . 62� <br /> �1 FLOV� > 3-1/2 " SOFT WOOD 4 . 380 <br /> 2� -------- <br /> TOTAL R-VALUE : 44 . 050 <br /> U = 1/R = 0 . 0�3 <br />