PHI Pre-Insulated Aluminium Ducts

General standard:

Size:  2000/4000*1200(L*W)                             Compressive Strength:450kpa

Thickness:20mm(also provide 25mm and 30mm)  Water Absorption:2.90%

Alum.Foil Thickness:0.08mm(both sides)              Dimensional Stability:0.53%(702)

Density:71kg/m3                                                  Oxygen Index:  57.80%
Fire Retardant:   A                                               Smoke Density:  2

Thermal Conductivity:  0.018W/m.k                     Smoke Toxicity:  25
(Average Temperature 252) 

Advantage :

Lower heat conductivity, higher thermal efficiency;
High Fire-Protection rating
Low density, light weight;
Easy Installation
Foamed with CFC free materials, environment protective;
Hermetic seal ensures little air leakage;
With aluminum foil reinforced on both side, its corrosion protective, hygiene, and has a beautiful appearance;
Foamed with closed-cell structure, it's water-proof and sound-insulated.
No protrudent flange on the connections, it can save a lot of building space.