Aluminum flexible duct,insulated flexible duct 
1. Length: 10m 
2. DIa:3''-20'' 
3. Density:16kg/m3-20kg/m3 
4. Paper carton packed

Feature:
Specifications:
1. Full flexible, high quality factory thermally insulated duct, for all pressure air 
conditioning and ventilation system
2. Diameter: 82mm to 457mm
3. Temperature range: -30 degree .C to 80 degree. C
4. Air velocity: Max.30m/sec(5906ft/min)
5. Working pressure: Max.300 mm WG(3000Pa or 12 WG)
6. Fireglass Thickness: 25mm
7. Fireglass Density: 16kg/m3-20kg/m3
8. Standard Length: 10m

Advantages:
Low costs on transport and logistics
Easy to install over either round or oval ducting
No special tools required for cutting or fixing
In case of fire no toxic gases are emitted
The product have been tested on fire resistance