Pre insulated duct panels combine a rigid foam core with protective aluminum or steel facings to create lightweight ductwork for Heating, Ventilation, and Air Conditioning (HVAC) systems. These panels weigh up to 72% less than traditional sheet metal ductwork while delivering thermal conductivity values as low as 0.022 W/m·K and meeting Society of Sheet Metal and Air Conditioning Contractors’ National Association (SMACNA) Class 1-3 air leakage standards.
Core materials include phenolic, polyurethane, or polyisocyanurate foam sandwiched between aluminum foil (0.04-0.1mm) or galvanized steel facings (up to 0.6mm). Phenolic cores achieve Class A fire ratings, while Polyisocyanurate (PIR) and Polyurethane (PU) variants meet B1-B2 standards with Underwriters Laboratories (UL) 181 Class 1 certification. Panels operate effectively from -40°C to 80°C, with specialized variants handling -250°C to 150°C.
Standard specifications include widths up to 1200mm, lengths under 4000mm, and thicknesses from 20-100mm. Installation involves Computer Numerical Control (CNC) cutting, followed by gluing, folding, and sealing joints. Teams can install approximately 200 square meters per eight-hour shift, making assembly significantly faster than conventional ductwork.
Applications span residential, commercial, and industrial buildings including hospitals, cleanrooms, and airports where thermal performance and air quality are critical. The panels use Chlorofluorocarbon (CFC)-free materials with zero ozone depletion potential and typically provide 15-30 years of service life with minimal maintenance requirements.
Pre Insulated Duct Panel Supplier for Maximum Energy Savings
RaxPanel provides high quality pre-insulated duct panels for both indoor and outdoor installations, designed to enhance HVAC efficiency with superior thermal insulation that cuts energy consumption by up to 25%. Featuring a lightweight construction, the panels are up to 70% lighter than traditional ductwork, enabling faster installation, reduced structural loads, and significant labor savings. The durable design with a closed-cell foam core minimizes flame spread and resists microbial growth, ensuring clean airflow, long-term integrity, and minimal maintenance.
With 20+ years of experience as a direct manufacturer in China, RaxPanel specializes in custom composite panel solutions, leveraging in-house R&D and innovative technologies to produce bespoke duct panels tailored to project requirements. Our production capacity of 1500+ m² daily allows us to serve clients in 30+ countries with UL181 certified products that meet SMACNA standards for low air leakage and high R-values, emphasizing sustainability and reliability.
Find out more about how our family of products can save you time, money and alleviate headaches on your next project.
| Parameter | Unit | Specification |
|---|---|---|
| Width | mm | 1200 (standard, customizable) |
| Length | mm | ≤ 4000 |
| Thickness | mm | 20 – 100 |
| Core Material | – | Phenolic, Polyurethane (PU), Polyisocyanurate (PIR) |
| Facing Material – Aluminum Foil Thickness | mm | 0.04 – 0.1 |
| Facing Material – Steel Thickness | mm | Up to 0.6 (prepainted galvanized steel) |
| Density | kg/m³ | 35 – 120 |
| Thermal Conductivity | W/m·K | 0.022 |
| Compressive Strength | MPa | ≥ 0.18 |
| Fire Rating | – | Phenolic: Class A; PIR: B1; PU: B2 (per UL 181 Class 1 Air Duct) |
| Water Absorption | % | ≤ 1.9 |
| Operating Temperature Range | °C | -40 to 80 (variants from -250 to 150 available) |
| Maximum Allowable Wind Velocity | m/s | ≤ 12 |
| Continuous Running Maximum Temperature | °C | ≤ 120 |
Frequently Asked Questions
What is a pre-insulated duct panel and how does it work?
A pre-insulated duct panel is a component used in heating, ventilation, and air conditioning (HVAC) systems to distribute air. It features a rigid insulation core, such as polyurethane (PU), polyisocyanurate (PIR), or phenolic foam, sandwiched between protective facings like aluminum foil or pre-painted steel. This design ensures efficient thermal insulation, minimizing heat loss or gain as air moves through the ductwork, and is essential for carrying cold and warm air throughout buildings.
What are the key benefits of using pre-insulated duct panels?
Pre-insulated duct panels offer significant benefits including being up to 72% lighter than traditional sheet metal ducts, enabling easier handling and faster installation. They provide excellent thermal efficiency with low thermal conductivity (as low as 0.022 W/m·K), reducing energy costs by 15-25%. Additionally, they feature low air leakage, fire resistance ratings, improved indoor air quality with fiber-free cores, and cost savings on installation and operation.
What materials are used in the construction of the panels?
The panels are constructed with a core of rigid foam insulation, such as polyurethane (PU), polyisocyanurate (PIR), or phenolic foam. The facings are typically aluminum foil (0.04-0.1mm thick) or pre-painted galvanized iron (PPGI) steel (up to 0.6mm thick), providing durability, corrosion resistance, and a vapor barrier.
What sizes and thicknesses are available for the duct panels?
Standard panel width is 1200mm, with lengths up to 4000mm to avoid deformation. Thickness options range from 20mm to 100mm. Custom sizes are available to meet specific project requirements, and panels can be manufactured in various dimensions for flexibility.
How is the pre-insulated duct panel installed?
Installation involves cutting the panels to shape using CNC machines, followed by applying adhesive, sealing joints with tape, and installing flanges for connections. The process is efficient, with two skilled workers typically able to install approximately 200 square meters of straight duct panels in an 8-hour shift, ensuring airtight and secure ductwork.
What fire safety standards and certifications does the product meet?
The panels meet rigorous fire safety standards including UL 181 for air ducts, ASTM E84 for flame spread and smoke density, and NFPA 90A/90B. Fire ratings vary by material, with phenolic foam rated A, PIR rated B1, and PU rated B2, ensuring high safety and compliance with international codes.
What is the expected lifespan and maintenance required for the duct panels?
Pre-insulated duct panels have a lifespan of 15 to 30 years with proper installation. Maintenance involves regular cleaning using methods like vacuuming or air washing, and minor damages can be repaired with aluminum tape or by replacing sections. Periodic inspections help maintain energy efficiency and indoor air quality.
How do you ensure consistent quality and reliable supply for high-volume orders from manufacturers and distributors?
We maintain consistent quality through rigorous quality management systems and certifications, including compliance with international standards such as ASTM and UL 181. Our manufacturing process involves in-house R&D and production with a daily output of over 1500 m², ensuring steady supply for bulk orders. With over 20 years of experience, we offer reliable logistics, with delivery typically within 7-15 days, and can customize packaging to prevent damage during shipping.
What support do you provide for custom panel designs and technical specifications to meet unique project needs?
We welcome custom designs and offer flexible specifications, including panel thickness from 20mm to 100mm, various core materials like PU or phenolic foam, and facing options such as aluminum foil or steel. Our team provides detailed technical data sheets, CAD models, and samples upon request to assist engineers and architects. With in-house R&D, we collaborate on tailored solutions, ensuring panels meet specific application requirements for optimal performance.
How do you manage logistics and delivery to guarantee on-time arrival for international projects, especially for urgent repairs or installations?
We prioritize efficient logistics with careful packaging, using carton boxes or PVC film to protect panels during transit. For international clients, we ship from major ports with delivery times as quick as one week for container orders. Our experience serving 30+ countries allows us to handle urgent requests, ensuring timely delivery to minimize downtime for maintenance or construction projects.
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