Thanks to its excellent products and quality services, UNT Duct is one of the leading pu duct sandwich panel manufacturers and suppliers in China. Welcome to buy the high quality and customized products from our factory. We will offer you the best service and fast delivery.

PU Duct Sandwich Panel

PU Duct Sandwich Panel is a three-layer composite panel for HVAC duct systems, featuring a rigid PU foam core with aluminum foil/metal facings.
It delivers ultra-low thermal conductivity (0.018–0.022 W/(m·K)), B1 flame retardancy, airtightness, and moisture resistance. Lightweight and pre-insulated, it eliminates extra insulation layers, cuts installation time, reduces air leakage, and lowers energy consumption.
Widely used in commercial buildings, hospitals, factories, and cleanrooms, it offers long service life, easy maintenance, and strong cost-effectiveness for modern ventilation systems.

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 40-45kg/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)

Energy Saving and HVAC System Value of PU Duct Sandwich Panel

Significantly reduce energy consumption
Integrated insulation eliminates cold bridges, reducing heat and cold loss by over 20%, lowering the load of the air conditioning unit, and resulting in obvious savings in long-term operating costs.

High airtightness reduces air leakage
The sealing of duct connections is reliable, with the leakage rate being approximately 0.98 m³/h・㎡, much lower than that of traditional iron sheet ducts, improving the air supply efficiency, and ensuring more stable temperature and humidity at the end.

No condensation and clean advantages
High moisture resistance prevents pipe wall condensation and dripping, inhibits mold growth, and is suitable for clean environments such as hospitals, laboratories, and food workshops, enhancing indoor air quality.

Industry Comparison and Core Competitiveness of PU Duct Sandwich Panel

Comparison with Traditional Galvanized Metal Ducts
No need for secondary insulation, no cold bridge, less air leakage, high energy efficiency, fast construction, clean and mold-resistant. The overall performance is comprehensively superior.

Comparison with Other Composite Ducts
Better insulation performance than fiberglass ducts, better fire resistance and moisture resistance than phenolic ducts, higher cost performance than PIR ducts, and stronger versatility.

Environmental and Compliance Advantages
No formaldehyde or Freon, environmentally friendly production and use, meeting green building rating and fire acceptance requirements, high market acceptance.

Improvement Directions
Enhance the wear resistance and impact resistance of the panels; develop higher flame-retardant and high-temperature-resistant formulas; optimize the connection and sealing process to further reduce the air leakage rate.