Normal Insulated Flexible Ducts | ![]() |
Parameter |
Alum Insulated duct (1 layer) |
Alum Insulated duct (2 layers) |
Inner Duct |
1 layer alum foil |
2 layers alum foil |
Insulation Layer |
16-32kg/m3-25mm glass wool |
16-32kg/m3-25mm glass wool |
Jacket Duct |
PET foil + alum foil |
PET foil + alum foil |
Diameter Range |
3-48 inches (75mm-1200mm) |
3-48 inches (75mm-1200mm) |
Temp. Range |
-30 ºC to 140 ºC |
-30 ºC to 140 ºC |
Max. Air Velocity |
30 m/s |
30 m/s |
Working Pressure |
2500 Pa |
2500 Pa |
Fire Resistance |
Class B1 (GB8624) |
Class B1 (GB8624) |
Standard Length |
10M, 6M etc. |
10M, 6M etc. |
(Noise reduction flexible duct is also available according to requirement.) | ![]() |
![]() |
2.2 Special Insulated Flexible Ducts
Square and rectangle insulated flexible duct is needed in some project, so does white fiber glass wool insulated flexible ducts. Below is the technical data:
Parameter |
Rectangle insulated duct |
White glasswool insulated duct |
Inner Duct |
1 layer alum foil |
2 layers alum foil |
Insulation Layer |
16-32kg/m3-25mm glass wool |
16-32kg/m3-25mm white glass wool |
Jacket Duct |
PET foil + alum foil |
PET foil + alum foil |
Diameter Range |
>100mm*100mm |
3-48 inches (75mm-1200mm) |
Temp. Range |
-30 ºC to 140 ºC |
-30 ºC to 140 ºC |
Max. Air Velocity |
30 m/s |
30 m/s |
Working Pressure |
2500 Pa |
2500 Pa |
Fire Resistance |
Class B1 (GB8624) |
Class B1 (GB8624) |
Standard Length |
10M, 6M etc. |
10M, 6M etc. |