SONIC LINER
Metal Duct Acoustical Insulation
 A flexible fibreglass blanket, faced with with
acoustically permeable black woven glass cloth on the airstream surface.
APPLICATIONS:
Interior acoustical liner for sheetmetal ducts in heating, ventilation and airconditioning duct systems
Suitable for operating temperatures up to 120ºC with air velocities up to 20m/s
BENEFITS:
- Non-combustible. Conforms to SABS 0177 Part V
- Fire index conforms to SABS 0177 Part III (Class 1)
- Greatly reduces mechanical equipment noise
- Can be factory installed
- Will not deteriorate or erode under normal operating conditions
- Improves thermal performance of ducting
THERMAL DATA
Thickness
mm |
Density
kg/m3 |
Thermal
Resistance
R-Value |
Thermal
Conductivity
k-Value |
| 15 |
32 |
0.43 |
0.035 |
| 25 |
24 |
0.68 |
0.037 |
ACOUSTIC DATA
Thickness
mm |
Density
kg/m3 |
Sound Absorption
Coefficient |
Noise Reduction
Coefficient
NRC Value |
| Frequency in Hz |
| 125 |
250 |
500 |
1000 |
2000 |
4000 |
| 15 |
32 |
0.15 |
0.25 |
0.57 |
0.89 |
1.05 |
0.91 |
0.70 |
| 25 |
24 |
0.20 |
0.38 |
0.82 |
1.13 |
1.06 |
0.90 |
0.85 |
|
