Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel
Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panelis 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)
Advantages of Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel
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.
Main Production Process of Polyurethane (PU) Foam Pre-Insulated HVAC Ductwork Panel
The UNTDuct PU System: Redefining Air Distribution Excellence
More than just pre-insulated aluminum panels, the UNTDuct System is a comprehensive solution - complete with precision-engineered accessories, specialized machinery, purpose-built tools, and expert know-how - ensuring flawless construction and installation.
Pre-insulated PU Panels:
The system's base sandwich boards consist of closed-cell PU foam core bonded with double-sided aluminum foil, delivering outstanding energy saving, moisture resistance and hygienic performance compared to traditional GI ducts.
Pre-insulated duct Accessories:
Custom aluminum and PVC profiles, sealants, hanging hardware and prefabricated duct fittings perfectly match panel sizes to secure airtight, stable duct joints during assembly.
Fabrication Tools/ Equipment:
Specialized Machinery & Purpose-built Portable cutting, grooving and shaping hand tools plus optional automated processing machines support flexible on-site fabrication and standardized mass pre-production of duct components.
Know-How:
Professional Expert Know-how & Technical Support: Comprehensive technical training, customized design plans, construction guidance and after-sales consultation are provided to help clients handle all types of HVAC projects smoothly.
How to fabricate Polyurethane (PU) pre-insulated Straight Duct
Step 1 - Tracing: outline the duct shapes on the panel.
Step 2 - Cutting: Using manual cutting tools, cut along the panel edges and create 90 degree "V" grooves on the panel.
Step 3 - Gluing: Apply glue to the cutting surfaces of the panels.
Step 4 - Folding: After the glue is cured, fold the sides toward each other to from the straight duct.
Step 5 - Taping: The tape is applied only to the external seams of the duct where the sides of the panel were joined for air-tightness.
Step 6 - Flanging: After applying glue and positioning the steel angle bracket, process to fit the PVC or aluminum invisible flanges.
Step 7 - Reinforcement: reinforce the duct with an aluminum reinforcement bar and G.I. Shaped disks, if necessary.
Step 8 - Sealing: After the duct is assembled, seal all internal joints hermetically with silicone.
Our Honor & certificate
Since its establishment in 2013, UNT has obtained 17 patents and earned numerous industry honors. We are also certified to the ISO 9001, ISO 14001, and ISO 45001 international management standards.
December 2020: Awarded the National High-Tech Enterprise Certificate and the Fujian Provincial High-Tech Enterprise Certificate
December 2023: Awarded the National High-Tech Enterprise Certificate and the Fujian Provincial High-Tech Enterprise Certificate
November 2024: Listed in the Fujian Provincial List of Specialized, Refined, Differentiated and Innovative Small and Medium-Sized Enterprises
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