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Class O Armaflex Duct is Class O Armaflex sheet with a bright aluminium foil covering pre-applied.
Class O Armaflex Duct
The clean, dust and fibre free, duct insulation with a professional finish
Class O Armaflex Duct is Class O Armaflex sheet with a bright aluminium foil covering pre-applied.
Being highly flexible, Class O Armaflex Duct sheet can be installed on both rectangular and circular ductwork matching contours exactly.
As a dust and fibre free, formaldehyde free product with an ODP of 0, Class O Armaflex Duct is suitable for use on ductwork in offices, schools and hospitals.
| The benefits of specifyingClass O Armaflex Duct |
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Compliant with Building Regulations Part L* energy saving legislation |
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Suitable for rectangular and circular ductwork |
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No piercing of ductwork required |
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High flexibility for ease of fitting |
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Self adhesive for fast and cost-effective application |
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Matching bracket covers and tape eliminate thermal bridges and give a professional finish | * Applies to warm ductwork only at foil covered 32mm thickness
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Rectangular ductwork |
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Circular ductwork |
| Properties |
Values |
Remarks |
| Material |
Aluminium foil covered sheets made of foamed nitrile rubber |
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| Max. Surface Temperature |
+60°C |
For temperatures above +60°C, please consult our Technical Department. |
| Min. Surface Temperature |
-50° C |
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| Thermal Conductivity at 0°C |
0.034 W/(m · K) |
Test acc. to EN ISO 8497 |
| Thermal Conductivity at +20°C |
0.036 W/(m · K) |
| Thermal Conductivity at +40°C |
0.038 W/(m · K) |
| Water Vapour Permeability |
Moisture Resistance Factor µ: 7,000 |
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| BS EN ISO 9346:1996 2.79 · 10(-14) kg/(m s Pa) |
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| Water Absorption |
0.2% by volume |
Test acc. ASTM C 209 |
| Surface Spread of Flames |
Class 1 |
acc. to BS 476 Part 7: 1997 |
| Fire Propagation |
Total Index Performance (I) £ 12
Sub Index (i1) ≤ 6 |
acc. to BS 476 Part 6: 1989 |
Fire Performance
acc. to Building Regulation |
Class O |
Test results for Surface Spread of Flames and Fire Propagation meets Class O fire category for |
| Building Regulations 2000 (England and Wales) |
| Building Standards (Scotland) Regulations 1990 |
| Building Regulations 2000 (Northern Ireland) |
| Building Regulations 1997 (Republic of Ireland) |
| Reaction to fire |
Self-extinguishing, does not drip |
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| Noise Reduction |
Sound Absorption Coefficient ISO 354:2003 up to 0.8 |
Also suitable for use in the prevention of sound passage |
| Resistance to |
Building Materials: Very Good
Chemicals: Consult Product Test List
Ozone: Very Good |
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| Environmental Aspects |
ODP zero
GWP zero |
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| Health Aspects |
Dust & Fibre Free
Microban anti-microbial protection |
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| Outdoor Applications |
For outdoor application please consult our Technical Service Department or use Arma-Chek D or Arma-Chek R. |
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