| Material | Open-cell melamine-based foam |
| Density | 0.5 to 0.7 lbs./cubic ft. (ASTM D3574-77) |
| Long-Term Service Temperature | 302° F |
| Fire Resistance | Class 1 per ASTM E 84 (all finishes) Meets UL 1715 (willtec natural ) |
| Flame Spread per ASTM E 84 | Natural: 5 Painted: 10 Hypalon®-coated: 25 |
| Smoke Density per ASTM E 84 | Natural: 50 Painted: 10 Hypalon-coated: 65 |
| Fungus Resistance | Rating 0 per ASTM G21 |
| Microbial Growth | Passes UL 181, section 11 |
| Finishes | Natural (white and light grey), painted or Hypalon-coated* |
| Finish | Thickness |
Coefficients per ASTM C423-90a |
|||||||
125Hz |
250Hz |
500Hz |
1kHz |
2kHz |
4kHz |
NRC |
Mounting Type |
||
| Natural(white and light grey) | 1 1/2" |
0.08 |
0.29 |
0.73 |
0.94 |
0.97 |
0.89 |
0.75 |
B |
| 1 7/8" |
0.17 |
0.55 |
1.07 |
1.15 |
1.08 |
1.10 |
0.95 |
B |
|
2 1/2" |
0.19 |
0.62 |
1.15 |
1.21 |
1.14 |
1.20 |
1.05 |
B |
|
| Painted (charcoal,beige, brown or blue) | 1 1/2" |
0.06 |
0.34 |
0.79 |
1.02 |
1.00 |
0.98 |
0.80 |
B |
1 7/8" |
0.19 |
0.55 |
1.17 |
1.21 |
1.15 |
1.13 |
1.00 |
B |
|
2 1/2" |
0.20 |
0.66 |
1.20 |
1.19 |
1.12 |
1.12 |
1.05 |
B |
|
