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Microfiber

Micro Duct Wrap FR duct insulation

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.

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

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Product details

Duct and HVAC insulationGlass wool (fibreglass)Microfiber

Glass wool, FR reinforced aluminium foil on one side

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 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.

What is it made of?

Glass wool (fibreglass) · Facing: Reinforced aluminium foil, one side (FR, 5 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.

PropertyValueConditions / standardSource
Thermal conductivity (λ)0.038 / 0.035 / 0.033 / 0.032 W/m·K16 / 24 / 32 / 48 kg/m³ · the 2023 brochure (p.4) prints the same figures at 24 °C mean · ASTM C518Micro Duct Wrap datasheet (MI 04/12), p. 1
FacingFR, 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 facingUL 723 · ASTM E84 · ULC-S102M · FM Approved—Micro Duct Wrap datasheet (MI 04/12), p. 1
Standards / certificationTIS 486, 487 · ASTM · NFPA 90A · Australian Standards—Micro Duct Wrap datasheet (MI 04/12), p. 1

Models and sizes available

ModelThickness (mm)Density (kg/m³)Width (mm)Length (mm)R (m²·K/W)
16 × 2525161220305000.658
16 × 5050161220152501.316
24 × 2525241220305000.714
24 × 3838241220152501.086
24 × 5050241220152501.429
32 × 2525321220152500.758
32 × 5050321220152501.515
48 × 252548122075000.781
48 × 505048122075001.563

Pack quantities and prices — ask us on LINE

Applications

Highlights

  • FR facing (maker states FM Approved)
  • 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

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