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Microfiber

Micro Duct Wrap FRD duct insulation

Glass-wool roll for wrapping ducts; the FRD 524 facing has foil on both faces, a plastic moisture-barrier layer and 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

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Product details

Duct and HVAC insulationGlass wool (fibreglass)Microfiber

Glass wool, double-sided aluminium foil facing with a plastic moisture layer (FRD 524)

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 FRD from Microfiber is a glass-wool roll for wrapping cold and hot air ducts, factory-faced with the 6-layer double-sided FRD 524 facing: foil, plastic moisture-barrier layer (Albar), kraft paper, adhesive, 3-way glass-fibre reinforcement and foil. The maker positions it for work needing more water and moisture protection.

What is it made of?

Glass wool (fibreglass) · Facing: Double-sided aluminium foil with plastic moisture layer (FRD 524, 6 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
FacingFRD 524, 6 layers: aluminium foil / plastic moisture-barrier layer (Albar) / kraft paper / adhesive / 3-way glass-fibre reinforcement / aluminium foil—Micro Duct Wrap datasheet (MI 04/12), p. 1
Standards the maker names for the facingUL 723 · ASTM E84 · BS 476 Class O · Australian Standards—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

  • Double-sided foil with plastic moisture layer
  • 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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