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Rigid PU Pre-Insulated Ductwork

Rigid PU (polyurethane) pre-insulated ductwork is a modern, high-performance alternative to traditional sheet metal ducts for heating, ventilation, and air conditioning (HVAC) systems. It consists of a rigid polyurethane foam core sandwiched between two metal facings, typically aluminum or galvanized steel.

This design offers significant advantages in energy efficiency, ease of installation, and long-term durability. Unlike traditional systems that require field-installed insulation, this is a "dual-skin" or "sandwich panel" solution that arrives ready for fabrication.

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 3950*1200*20mm
Foam Density: 48kg/m3
Aluminum Thickness: 0.06mm or 0.08mm
Aluminum Color: Silver
Packing: 10 sheets/ package
Loading Capacity: 710 sheets/ 40'HQ (packed with plastic bags)
660 sheets/ 40'HQ (packed with cardboard box)

Advantages of Rigid PU Pre-Insulated Ductwork

Understanding the core technical specifications explains why this system is gaining popularity:

Low Thermal Conductivity:

PU foam has a thermal conductivity of 0.020 W/m·K, which is significantly lower than fiberglass. This provides superior thermal resistance (R-value) with less thickness, meaning ducts can be slimmer while still preventing energy loss and condensation.

Exceptional Airtightness:

When properly sealed, these systems achieve very low air leakage rates. Some systems meet Class D airtightness (the lowest leakage level), which is far superior to standard metal ducts and results in significant energy savings.

Temperature Range:

Rigid PU foam is effective across a wide range, from -100°C to +80°C for air handling, making it suitable for both cold and hot climates.

Lightweight Construction:

The foam core makes the panels much lighter than equivalent metal ducts, reducing the need for heavy support structures and speeding up installation.

Benefits of Rigid PU Pre-Insulated Ductwork Over Traditional Ductwork

Why are engineers and contractors making the switch? The benefits are compelling:

Energy Efficiency:

The superior insulation reduces thermal loss by up to 30% compared to non-insulated or poorly insulated metal ducts, lowering HVAC operational costs.

Condensation Control:

Because the foam prevents the outer surface from reaching the dew point, it effectively eliminates condensation, mold, and water damage without needing external vapor barriers.

Cleaner Air Quality:

The smooth, non-porous inner metal lining resists dust and microbial growth, making it hygienic and easy to clean for sensitive environments like hospitals and cleanrooms.

Faster Installation:

The insulation is factory-applied, which cuts installation time by as much as 50%. There is no need to wrap insulation on-site, and the panels can be fabricated into ducts using specialized tools.

Space Saving:

The compact design often eliminates the need for large, protruding flanges, saving valuable building space in ceiling plenums and risers.