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Micro Duct Wrap FR 16 kg/m³ · 25 mm · 1.22 × 30.5 m
- Thickness (mm)
- 25
- Density (kg/m³)
- 16
- Width (mm)
- 1220
- Length (mm)
- 30500
- R (m²·K/W)
- 0.658
Sound coming in or going out (sound insulation)
Echoey rooms (sound absorption)

Glass-wool roll with the FR foil facing on one side for wrapping air-conditioning ducts. The maker names UL 723, ASTM E84, ULC-S102M and FM Approved for the facing.
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See all models and sizesManufacturer documentsTechnical specifications
Glass wool, FR reinforced aluminium foil on one side
Micro Duct Wrap FR from Microfiber is a glass-wool roll for wrapping cold and hot air ducts. It is factory-faced with the 5-layer FR facing: natural-fibre paper, adhesive, 3-way glass-fibre reinforcement, adhesive and aluminium foil. For buildings, offices, factories and homes.
Glass wool (fibreglass) · Facing: Reinforced aluminium foil, one side (FR, 5 layers) · Roll
Thickness 25–50 mm · 16–48 kg/m³ — Choose a size
Micro Duct Wrap datasheet (MI 04/12)
Technical data from the manufacturer's documents Microfiber · Checked 12 Oct 2026
All values come from the manufacturer's documents, with conditions and test standards. Values the documents do not state are not shown.
| Property | Value | Conditions / standard | Source |
|---|---|---|---|
| Thermal conductivity (λ) | 0.038 / 0.035 / 0.033 / 0.032 W/m·K | 16 / 24 / 32 / 48 kg/m³ · the 2023 brochure (p.4) prints the same figures at 24 °C mean · ASTM C518 | Micro Duct Wrap datasheet (MI 04/12), p. 1 |
| Facing | FR, 5 layers: natural-fibre paper / adhesive / 3-way glass-fibre reinforcement / adhesive / aluminium foil | — | Micro Duct Wrap datasheet (MI 04/12), p. 1 |
| Standards the maker names for the facing | UL 723 · ASTM E84 · ULC-S102M · FM Approved | — | Micro Duct Wrap datasheet (MI 04/12), p. 1 |
| Standards / certification | TIS 486, 487 · ASTM · NFPA 90A · Australian Standards | — | Micro Duct Wrap datasheet (MI 04/12), p. 1 |
| Model | Thickness (mm) | Density (kg/m³) | Width (mm) | Length (mm) | R (m²·K/W) |
|---|---|---|---|---|---|
| 16 × 25 | 25 | 16 | 1220 | 30500 | 0.658 |
| 16 × 50 | 50 | 16 | 1220 | 15250 | 1.316 |
| 24 × 25 | 25 | 24 | 1220 | 30500 | 0.714 |
| 24 × 38 | 38 | 24 | 1220 | 15250 | 1.086 |
| 24 × 50 | 50 | 24 | 1220 | 15250 | 1.429 |
| 32 × 25 | 25 | 32 | 1220 | 15250 | 0.758 |
| 32 × 50 | 50 | 32 | 1220 | 15250 | 1.515 |
| 48 × 25 | 25 | 48 | 1220 | 7500 | 0.781 |
| 48 × 50 | 50 | 48 | 1220 | 7500 | 1.563 |
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