Absorption Coefficients @ Octave Band Frequencies (Hz)
Thickness 125 250 500 1000 2000 4000 NRC
3 .95 1.30 1.19 1.08 1.02 1.00 1.15
5 .97 1.37 1.23 1.05 1.00 1.01 1.15
Natural Value
They offer this on their site. Their panels are rather thick 6" bass and 4" for acoustic sound panels.A set of 3 24"X24"4" will run only 119.00 for natural weave and colors an extra 10.00. The bass traps are 2 for 99.00 if you buy the 24"x24"6" panels. Slightly larger are a fraction extra in price. Mounting wood brackets are 3 for 39.99 but I am sure many will make their own for less.