| Material: | Composite Material |
|---|---|
| Usage: | for Air Conditioner |
| Application: | Fire Resistance |
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The insulated flexible duct is specially designed for HVAC air ventilation applications. It features a multi-layer structure including a black PE outer jacket, a polyester insulation layer, and an inner PVC.
All materials are flame-retardant, non-toxic when burned, and moisture-resistant, ensuring safe and stable performance in both indoor and outdoor environments.
Reinforced with high-elasticity carbon steel wire, the duct is flexible, durable, and capable of bending in multiple directions without deformation. With excellent fire resistance meeting Class A2, European M0/M1, and UL standards, this duct is widely trusted in global markets.
The product is pre-cut to standard lengths and offers high compressibility for easy transport and installation-no special tools required. It is commonly used in commercial and industrial ventilation systems and is also available with related products such as aluminum flexible ducts and combi PVC aluminum ducting hoses.
| Specification | Details |
|---|---|
| Outer Sleeve | PE |
| Insulation Material | Polyester (100g/m³-750g/m³), 25mm/30mm |
| Inner Duct | PVC |
| Available Diameter | 50mm-650mm (2″-25″) |
| Carbon Steel Wire Dia. | 0.6mm-2.5mm |
| Maximum Length | 10m |
| Thermal Insulation | R0.4-R3.0 |
| Fire Resistance Rating | Class A2 (Max) |
| Temperature Range | -30ºC to +150ºC |
| Operating Pressure | 2000Pa-3000Pa |
| Compression Ratio | 1:10 |
Size & Diameter
| Duct Size (Inch) | Duct Dia. (mm) | Wire Dia. (mm) | Wire Spacing (mm) | Carton Size for 10m (mm) |
|---|---|---|---|---|
| 4″ | 102 | 0.9 | 30 | 200×200×1010 |
| 5″ | 125 | 0.9 | 30 | 200×200×1010 |
| 6″ | 152 | 1.0 | 37 | 230×230×1010 |
| 6.5″ | 165 | 1.0 | 37 | 240×240×1010 |
| 7″ | 180 | 1.1 | 40 | 260×260×1010 |
| 8″ | 203 | 1.1 | 40 | 280×280×1010 |
| 10″ | 254 | 1.2 | 45 | 330×330×1010 |
| 12″ | 305 | 1.2 | 45 | 380×380×1010 |
| 12.5″ | 315 | 1.2 | 45 | 390×390×1010 |
| 14″ | 355 | 1.2 | 45 | 430×430×1010 |
| 16″ | 405 | 1.2 | 45 | 480×480×1010 |
| 18″ | 455 | 1.2 | 45 | 530×530×1010 |
| 20″ | 505 | 1.2 | 45 | 580×580×1010 |
Comprehensive Range Of Insulated Flexible Ducts Insulated Flexible Duct
At GFI HVAC, we provide a comprehensive range of insulated flexible ducts, designed for various ventilation, air distribution, and thermal insulation needs in commercial, industrial, and residential HVAC systems.
Our product line includes multiple material configurations to meet specific requirements for flame resistance, mechanical strength, and installation environments.
We offer various models such as:
| Layer | Material Options | Function |
|---|---|---|
| Inner Core | Aluminum foil, PET film, PVC layer, or multi-combinations (e.g., Aluminum + PET) | Provides smooth air conveyance, resists corrosion, and maintains vapor barrier |
| Insulation | Fiberglass wool or Polyester fiber | Delivers effective thermal insulation and acoustic reduction |
| Outer Jacket | Metallized PET (VMPET), PVC film, reinforced aluminum foil, or laminated composites | Offers fire protection, UV resistance, and moisture shielding |
Our insulated flexible ducts meet various international quality and fire safety standards, including:
Class A2 fire resistance
EN13501-1 M0/M1 Rating
UL94 (Flame Retardancy)
ISO 9001:2015 certified production processes
GFI HVAC's flexible duct production facility spans 2400 square meters, equipped with 5 advanced production lines. Our products are widely distributed across more than 30 countries and regions, including the United States, Canada, Italy, Germany, New Zealand, Dubai, Japan, and South Korea.
Committed to continuous improvement and strict quality control, we have obtained ISO 9001 certification, passed national fire protection standards for building materials, and comply with international environmental regulations such as REACH.
Since 2011, GFI HVAC has been dedicated to the HVAC industry, beginning with galvanized duct (GI duct) and pre-insulated duct manufacturing. Over the past 13 years, we have steadily expanded our operations, establishing and investing in new production facilities to enhance our capabilities.
Today, GFI HVAC operates three duct production line(GI Duct, Spiral Duct, PID Duct) and a dedicated manufacturing site for air vents and dampers. Additionally, we have strategically invested in rubber insulation and flexible duct factories, further strengthening our ability to provide integrated solutions for HVAC projects.
Beyond factories and workers, we also have well-established trade and logistics departments. In business management, GFI HVAC values humanity and shared beliefs. We firmly believe that GFI HVAC is not just a manufacturer but a company driven by human-centric values and a strong collective vision.
GFI HVAC provides advanced HVAC solutions to hospitals, factories, airports, stadiums, commercial complexes, and engineering contractors in over 50 countries worldwide. Additionally, GFI actively participates in international HVAC exhibitions in China, Thailand, Vietnam, and beyond, staying at the forefront of industry trends and fostering deep collaborations with global clients.
At GFI, we are more than just a manufacturer-we are your partner in building a sustainable and efficient future. Let's innovate together and create global value!
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