PU Sandwich Duct Foam Panel

Thanks to its excellent products and quality services, UNT Duct is one of the leading pu sandwich duct foam 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.

 

Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel is a high-performance, all-in-one solution designed for modern heating, ventilation, and air conditioning (HVAC) systems. Built with a precision-engineered sandwich structure, it features a dense polyurethane (PU) foam core-celebrated for its exceptional thermal insulation properties-sandwiched between two protective layers of corrosion-resistant aluminum foil. This factory-prefabricated panel merges insulation, structural strength, and airtightness into a single component, eliminating the need for separate insulation installation and streamlining ductwork setup in diverse buildings.

 

Structure: Silver Aluminum/ PU Foam/ Silver Aluminum
Size: 4000*1200*20mm
Foam Density: 50kg/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)

1. Superior Thermal Insulation for Energy Savings

The high-density PU foam core is the star of the show, boasting an ultra-low thermal conductivity of 0.020–0.022 W/m·K. This means it effectively blocks heat transfer between the air inside the ducts and the surrounding environment, keeping cool air cool in summer and warm air warm in winter. By reducing energy loss from the HVAC system, it cuts operational energy consumption by up to 30–40%, leading to significant long-term savings on utility bills and supporting sustainable building goals.

2. Enhanced Fire Safety & Compliance

Modern PU foam in these panels is treated with advanced flame-retardant additives, ensuring it meets strict fire safety standards. In the event of a fire, the foam forms a protective char layer on its surface, slowing the spread of flames and reducing the release of toxic gases. This added safety makes it suitable for high-occupancy spaces like schools, hospitals, and commercial buildings.

3. Moisture Resistance & Longevity

The closed-cell structure of PU foam naturally resists water absorption, preventing moisture-related issues like mold growth, insulation degradation, or structural damage. Combined with durable aluminum or steel outer layers that resist corrosion and wear, these panels are built to last. With proper installation and maintenance, they can maintain peak performance for 15–20 years, minimizing the need for frequent repairs or replacements.

4. Optimized Air Quality & Airflow Efficiency

The smooth, non-porous inner surface of the panels minimizes air resistance, allowing air to flow freely through the ductwork with less pressure drop. This not only improves HVAC system efficiency but also reduces dust accumulation and microbial growth, ensuring cleaner air distribution. This is especially critical for environments where indoor air quality is a priority, such as hospitals, food processing facilities, and offices.

5. Lightweight & Easy Installation

Compared to traditional metal ducts, PU foam pre-insulated panels are significantly lighter-often weighing just 1/3 as much. This makes transportation, handling, and on-site maneuvering much easier, reducing labor intensity. Factory-prefabricated in standardized sizes with modular joints, they can be quickly assembled using specialized adhesives and connectors, cutting installation time by up to 50% and ensuring consistent quality across the project.

6. Versatile for All Building Types

These panels are highly adaptable, making them suitable for a wide range of applications. Whether in residential complexes, office buildings, hotels, shopping malls, or light industrial facilities, they perform reliably. They can be customized into various shapes (rectangular, circular, or transitional) to fit complex building layouts, and work well for both exposed and concealed duct installations.

Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel is a smart, efficient choice for modern HVAC systems, combining top-tier insulation, safety, and ease of installation to deliver comfortable, cost-effective, and sustainable air distribution in any building.

The installation is highly convenient. The panels can be customized for cutting. On-site, 45° angle bonding or "H"-shaped reinforcement strips are used for connection. Combined with special sealant and flange accessories, no complex tools are required. Compared to traditional iron sheet ducts, the construction efficiency is increased by more than 50%. For a 1000㎡ duct installation, it only takes 3-4 days.
The integrated design saves labor and materials. The panels integrate functions of air ducts, insulation, and sound insulation. It eliminates the need for secondary insulation processing, reduces the occupation of building ceiling space, and avoids the air leakage problem at the connection points of traditional ducts. The air leakage of the duct system is far lower than the requirements of national standards.
Transportation and maintenance are convenient. The unit weight of the panels is only 10-13.4kg/㎡. The transportation cost is low and the on-site handling is easy. The surface is treated with anti-corrosion and acid-base resistance. The service life exceeds 20 years. Daily maintenance is not frequent, and local damage can be directly cut, bonded, and repaired.

The initial investment has a high cost-effectiveness. Although the unit price of the board is slightly higher than that of traditional rock wool boards, no additional materials for insulation, sealing, sound insulation, etc. are required, reducing the cost of accessories. At the same time, the installation labor demand is low, which can reduce the construction labor cost by about 30%.
The operating energy consumption is significantly reduced. The excellent insulation performance reduces the energy consumption of the air conditioning system by more than 30%. Long-term use can continuously save electricity expenses. It is particularly suitable for high-energy-consuming scenarios such as large shopping malls, logistics cold storage, and industrial factories.
The total life cycle cost is low. The board has strong durability and the characteristics of moisture resistance and corrosion resistance prevent frequent replacements due to material aging and performance decline. Calculated over a 20-year usage period, the comprehensive cost is 25%-30% lower than that of traditional duct materials.

The materials are environmentally friendly, and the production process does not release harmful substances such as Freon and formaldehyde. The core material and the surface layer are both recyclable materials, meeting the requirements of building energy conservation and environmental protection. They will not cause pollution to the indoor air quality.
The hygiene performance meets the standards. The inner side can be combined with antibacterial aluminum foil or food-grade PVC surface layer. The surface is smooth and does not accumulate dust or bacteria, meeting the strict hygiene requirements of food processing, medical hospitals, electronic clean workshops, etc.
It complies with industry standards. The product follows the national standards such as JGJ141 "Ventilation Duct Technical Specifications" and GB8624 "Classification Method of Building Materials Combustion Performance", and also conforms to the European EN13501-1 flame retardant standard. It has no barriers for export overseas.