Your selection
Micro Duct Wrap FSF 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
Micro Duct Wrap FSF duct insulation
Glass-wool roll for wrapping ducts; the FSF facing has aluminium foil on both faces with 3-way glass-fibre reinforcement.
- Thickness
- 25–50 mm
- Density
- 16–48 kg/m³
- 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
Choose model and size
No size chosen yet
Answer every step above to ask about that exact item, or ask without choosing.
Ask about this productYour selection
Micro Duct Wrap FSF 16 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 16
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.316
Your selection
Micro Duct Wrap FSF 24 kg/m³ · 25 mm · 1.22 × 30.5 m
- Thickness (mm)
- 25
- Density (kg/m³)
- 24
- Width (mm)
- 1220
- Length (mm)
- 30500
- R (m²·K/W)
- 0.714
Your selection
Micro Duct Wrap FSF 24 kg/m³ · 38 mm · 1.22 × 15.25 m
- Thickness (mm)
- 38
- Density (kg/m³)
- 24
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.086
Your selection
Micro Duct Wrap FSF 24 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 24
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.429
Your selection
Micro Duct Wrap FSF 32 kg/m³ · 25 mm · 1.22 × 15.25 m
- Thickness (mm)
- 25
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 0.758
Your selection
Micro Duct Wrap FSF 32 kg/m³ · 50 mm · 1.22 × 15.25 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 15250
- R (m²·K/W)
- 1.515
Your selection
Micro Duct Wrap FSF 48 kg/m³ · 25 mm · 1.22 × 7.5 m
- Thickness (mm)
- 25
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 7500
- R (m²·K/W)
- 0.781
Your selection
Micro Duct Wrap FSF 48 kg/m³ · 50 mm · 1.22 × 7.5 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 48
- Width (mm)
- 1220
- Length (mm)
- 7500
- R (m²·K/W)
- 1.563
See all models and sizesManufacturer documentsTechnical specifications
Product details
Glass wool, double-sided reinforced aluminium foil facing
- Thickness
- 25–50 mm
- Density
- 16–48 kg/m³
- 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
What is it?
Micro Duct Wrap FSF from Microfiber is a glass-wool roll for wrapping cold and hot air ducts, factory-faced with the 7-layer double-sided FSF facing: foil, polymer adhesive, 3-way glass-fibre reinforcement, polymer adhesive, foil, kraft paper and foil. For buildings, offices, factories and homes.
What is it made of?
Glass wool (fibreglass) · Facing: Double-sided reinforced aluminium foil (FSF, 7 layers) · Roll
Which sizes are available?
Thickness 25–50 mm · 16–48 kg/m³ — Choose a size
Where does the data come from?
Micro Duct Wrap datasheet (MI 04/12)
Technical data from the manufacturer's documents Microfiber · Checked 12 Oct 2026
Technical specifications
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 | FSF, 7 layers: aluminium foil / polymer adhesive / 3-way glass-fibre reinforcement / polymer adhesive / aluminium foil / kraft paper / aluminium foil | — | Micro Duct Wrap datasheet (MI 04/12), p. 1 |
| Standards the maker names for the facing | UL 723 · ASTM E84 · BS 476 Class O | — | 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 |
Models and sizes available
| 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 |
Pack quantities and prices — ask us on LINE
Applications
Highlights
- Double-sided reinforced foil facing
- Helps control condensation on cold ducts
- Several densities and thicknesses
Manufacturer documents
Micro Duct Wrap datasheet (MI 04/12)PDF · Microfiber Industries · TH
Micro Duct brochure (EX-BR-004, 2023)Reference document · ask us on LINE for the file
Related products
Alternatives
Duct and HVAC insulation · Glass wool
Microfiber Micro Duct Wrap FRK
- Thickness
- 25–50 mm
- Density
- 16–32 kg/m³
- Thermal conductivity (λ)
- 0.033–0.038 W/m·K
Duct and HVAC insulation · Glass wool
Duct Excel ISODEC
- Diameter
- 76–508 mm
- Density
- 16–48 kg/m³
- Service temp.
- -30 – 140 °C
Used together
Installation accessories · Tape
3T INSU-TAPE Aluminium Tape
- Width
- 50 / 63 mm
- Length
- 45 m
- Service temp.
- -20 – 120 °C
Installation accessories · Adhesive
3T INSU-BOND FiberTight
- Service temp.
- -15 – 90 °C
- Coverage
- 7.5 m²/kg
- Pack
- 10 kg
Helpful before you choose
Not sure which model suits your job?
Send the area details or site photos — we'll suggest the model and quantity
Ask via LINE