Tanger Polyisocyanurate foaming (PIR) pre-insulated air duct panels, Thermal conductivity is 0.018 W/mk,
Sandwich structure: Protected on outside with 220 micron galvanized steel.
Core material is PIR polyisocyanurate foaming.
Promise: 5 years guarantee of against defect, 20 years guarantee of use.

Advantages:
Lowest thermal conductivity: 0.018 W/mk
Energy-saving: Annually 30, 000Kwh for 10, 000 square meter
Long life: Thermal conductivity can be stable for more than 22 years.
Environmental friendly: No benzene, no formaldehyde, CFC free.