
PHENOLIC DUCT
75%
Up to 75% lighter than steel ductwork.
20-30%
Faster installation time over steel.
Made from phenolic resin and cellulose fibre, our Phenolic Duct offers numerous advantages over traditional steel ductwork.
The HVAC industry commonly uses sheet metal for ducts. However, there has been a recent increase in the use of phenolic duct board ductwork due to its extensive benefits over traditional sheet metal ductwork.
Performance:
Phenolic ductwork has exceptional thermal insulation properties, which reduces energy loss between the heating/cooling source and the desired areas of air delivery. Sheet metal ductwork does not have sufficient insulation and absorbs heat energy from the surrounding areas, leading to temperature loss during the transfer process. As a result, phenolic duct board ductwork provides better temperature management and comfort in the desired areas.
Durability:
Phenolic ductwork is tougher and more resistant to wear and tear than sheet metal ductwork. It is more resistant to weather damage, mold, mildew, and other environmental elements. In contrast, sheet metal ductwork is more susceptible to environmental effects and is vulnerable to dents and damage due to external impacts.
Energy Efficiency:
Phenolic ductwork helps to reduce energy bills due to its exceptional insulation properties. According to a US Department of Energy study, phenolic duct board ductwork can reduce energy consumption by up to 40% compared to sheet metal ductwork.

ADVANTAGES OF FLOW DYNAMICS' PHENOLIC DUCTING
Custom-designed and locally fabricated to suit project-specific applications make this the ideal solution for commercial, and industrial project requirements.
✓ Significantly lighter weight for easier handling & installation
✓ Longer duct sections for faster installation
✓ Space-saving design with integrated insulation
✓ Flexible and easy to modify for custom layouts
✓ Seamless integration with existing metal ductwork
✓ Single-fix installation without separate insulation
✓ phenolic duct is not treated with harmful chemicals, which reduces its overall environmental impact.
Additionally, phenolic duct can be considered for a carbon credit because it has lower embodied energy than steel duct. Embodied energy is the total energy required to extract, process, transport, and install a building material.
Item | Unit | Specification - Alu/Foam/Alu |
---|---|---|
Lifespan of PU Air Duct | years | |
Continuous Running Maximum Temperature | ℃ | ≤70 |
Maximum Allowable Wind Velocity | m/s | ≤12 |
Working Temperature | ℃ | -100 to +80 |
Dimension Change | % | 0.3 |
Water Absorption | % | 0.36 |
Bending Strength | Mpa | 2 |
Compressing Strength | Mpa | 0.2 |
Thermal Conductivity
| w/m.k | 0.022 |
Foam Density | kg/m3 | 48 |
Alu. Foil Thickness | mm | 0.06 |
Standard Panel Size | mm | 3950*1200*20 |
Panel Structure | Alu/Foam/Alu |
PERFORMANCE FEATURES
