| NRC RATING FOR EGGCRATE FOAM |
| PROPERTY |
1-1/2" Eggcrate
|
2-1/2" Eggcrate
|
3-1/2" Eggcrate
|
| OVERALL NRC |
.67
|
.75
|
.82
|
| NRC @ 125 Hz |
.12
|
.20
|
.24
|
| NRC @ 250 Hz |
.20
|
.33
|
.42
|
| NRC @ 500 Hz |
.58
|
.68
|
.75
|
| NRC @ 1000 Hz |
.92
|
.99
|
1.02
|
| NRC @ 2000 Hz |
.97
|
1.01
|
1.06
|
| NRC @ 4000 Hz |
1.01
|
1.03
|
1.08
|
| Testing for the NRC Rating was done by the Reverberation Room Method (ASTM C423) | |||