Standard Colors are our natural color tone panels that we keep readily available in our Seattle warehouse. These colors come in multiple thicknesses and panel sizes as well as custom panel sizes on a special order basis.
Sizes Available: Standard 4′ x 9′ & 5′ x 12′. Special 4′ x 8′
Thickness: 1/2″, 1″ and 2″
Core Density:  5.5 – 13 PCF
NRC: 0.45 – 1.05 Type A
Face Type: Ironed Smooth Face
Core Color: Charcoal, Obsidian Black, Black Face Charcoal, Medium Grey, Light Grey, Dark Beige, Light Beige, Tan, Cloud, White
FSI: Class A Flame Spread Index
DATA SHEET: Standard PolySorb Data Sheet
Description of the test specimen

Name: PS1
Specimen Size: 10.80m2
Mount Method: Type A Mounting Method
Frame Construction: On the floor

Area of test specimen: 72. ft2
Air temp in the test room: 23 C
Air humidity in test room: 53%
Number of sound source positions: 2
Number of microphone positions per sound source position: 8
Type of noise used: Pink random noise
Type of mounting used: Type A Mounting

Practical sound absorption coefficients

Evaluation based on laboratory measurement results obtained by an engineering method.

Ratings according to ISO 11654
Weighted sound absorption coefficient: 0.45 
Sound absorption class: D

Rating according to ASTM C423 – 99
Noise Reduction Coefficient = 0.45 -0.95
Sound Absorption Average = 0.58

It is strongly recommended to use this single number rating in combination with the complete sound absorption coefficient curve. Sound absorption coefficients according to ISO 354 measurement of sound absorption in a reverberation room.