Non-Insulated Aluminium Flexible Duct
Ref: NFD-ALU
Lightweight non-insulated aluminium flex for short extract runs, transfers, and unconditioned air connections.
Key Specifications
- Material
- Multi-layer aluminium
- Wire helix
- Galvanised steel
- Temperature range
- –30 °C to +140 °C
- Max air velocity
- 20 m/s
- Max working pressure
- 2 500 Pa
- Available diameters
- 80 – 500 mm
Description
The NFD-ALU non-insulated flexible duct is a cost-effective solution for short duct runs where thermal insulation is unnecessary — such as extract connections, transfer ducts, and return-air paths within conditioned ceiling voids. The multi-layer aluminium core and galvanised wire helix provide flexibility and self-supporting strength, while the corrugated profile helps maintain duct shape around bends. Available in diameters from 80 mm to 500 mm in standard 10 m extended lengths.
Features
- Multi-layer aluminium construction
- Galvanised steel wire helix
- Self-supporting through bends
- Lightweight and easy to handle
Applications
- Extract fan connections
- Transfer duct runs
- Return-air paths in ceiling voids
Available Models
| Model | Diameter | Length (compressed) | Length (extended) |
|---|---|---|---|
| NFD-ALU-102 | 102 mm | 250 mm | 10 000 mm |
| NFD-ALU-152 | 152 mm | 250 mm | 10 000 mm |
| NFD-ALU-203 | 203 mm | 250 mm | 10 000 mm |
| NFD-ALU-254 | 254 mm | 250 mm | 10 000 mm |
| NFD-ALU-315 | 315 mm | 250 mm | 10 000 mm |
Technical Documents
Materials
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