We offer air ducts specially designed for air conditioning systems using our
proprietary technology. The material is an excellent alternative to traditional aluminum
ducts, as the material is composed of glass wool, no addition insulation is needed.  
We take special orders of any dimensions and configurations.
Physical Properties
Unit
Index
Standard
Density
Kg/m³
50 – 80
GB5480.3 –1985
Average fiber diamter
µm  
5
GB5480.4 –1985
Moisture rate
%
< 3
GB10299 – 1985
Thermal conductivity
w/m•K
≤ 0.04
GB10294 – 88
Combustibility Grade
 
Non-combustible Grade A
GB8624 – 1997
Sound absorption coefficient
 
24 Kg/m³ 2000 Hz
GB 47–83
(1.03 product reverberation
method)
Service temperature
°C
≤ 120
GB11835 – 89