Sound Absorption Ratings (NRC) 4" Owens Corning 703 Insulation
Choose Thickness
1" Thickness
2" Thickness
4" Thickness
NRC
40
20
60
80
90
100
120
140
160
0.0
0.5
1.0
1.5
2.0
NRC
1/3 Octave Band Center Frequencies In Hz.
HZ
125
500
1000
2000
4000
NRC
0.84
1.24
1.08
0.97
1.15