Insulated Flexible Duct – Aluminium
Ref: IFD-ALU
Aluminium insulated flexible duct with 25 mm glass wool insulation for conditioned air distribution with minimal heat loss.
Key Specifications
- Inner core
- Multi-layer aluminium
- Insulation
- Glass wool 25 mm, 16 kg/m³
- Vapour barrier
- Aluminium foil laminate
- Temperature range
- –30 °C to +120 °C
- Max air velocity
- 20 m/s
- Max working pressure
- 2 500 Pa
Description
The IFD-ALU insulated flexible duct consists of a multi-layer aluminium inner core supported by a galvanised steel wire helix, wrapped in 25 mm glass wool insulation (16 kg/m³) and enclosed in an aluminium foil vapour barrier. It is designed for the final connection between rigid ductwork and ceiling diffusers, fan coil units, and VAV boxes in heating, cooling, and ventilation systems. The insulation prevents condensation on chilled-air runs and minimises thermal losses on heated-air branches.
Features
- Multi-layer aluminium inner core
- 25 mm glass wool insulation (16 kg/m³)
- Aluminium foil vapour barrier
- Galvanised steel wire helix support
- Class 0 fire rated to BS 476
Applications
- Supply air final connections
- Fan coil unit tails
- VAV box connections
Available Models
| Model | Inner diameter | Outer diameter | Length (compressed) | Length (extended) |
|---|---|---|---|---|
| IFD-ALU-102 | 102 mm | 152 mm | 305 mm | 10 000 mm |
| IFD-ALU-152 | 152 mm | 202 mm | 305 mm | 10 000 mm |
| IFD-ALU-203 | 203 mm | 253 mm | 305 mm | 10 000 mm |
| IFD-ALU-254 | 254 mm | 304 mm | 305 mm | 10 000 mm |
| IFD-ALU-315 | 315 mm | 365 mm | 305 mm | 10 000 mm |
Technical Documents
Materials
Related Products
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Lightweight non-insulated aluminium flex for short extract runs, transfers, and unconditioned air connections.