Fire-teK WM 908 GGA

FIRE PROTECTION WIRED MATS
KNAUF INSULATION FIRE-TEK WM 908 GGA

Type of Insulation:
Mineral wool wired mat for the fire protection and thermal insulation of round air ducts.
The wired mat must have certification and CE marking in accordance with EN 14303.

Facing:
The wired mat shall have aluminium foil between the mineral wool and the wired mesh.

Description:
Mineral wool wired mat, stitched with galvanised wire onto galvanised wire mesh and aluminium foil between the mineral wool and the wired mesh. The mineral wool wired mat shall use a mainly bio-based binder, e.g. Ecose Technology, contain no added formaldehyde and be certified under Eurofins Gold Indoor Air Comfort quality standards or equivalent.

Main characteristics:
1. Eurofins
Certification Indoor Air Comfort: Gold Standard

2. Fire
The wired mats shall be non-combustible with the following reaction to fire according to 
EN 13501-1: A1.
The fire resistance class according to EN 13501-3 has to be El 30 (ve ho i↔o)-S with 60 mm insulation thickness and El 60 (ve ho i↔o)-S with 80 mm insulation for round air ducts, (fire resistance rating of 30 or 60 minutes for vertical and horizontal round air ducts, with fire resistance from inside and outside the duct incl. smoke leaks).

3. Thermal
The thermal conductivity λ-value shall be according to EN 12667:
0,040 W/(mK) at 50 °C
0,046 W/(mK) at 100°C
0,062 W/(mK) at 200 °C
0,084 W/(mK) at 300 °C
0,112 W/(mK) at 400 °C
0,146 W/(mK) at 500 °C
0,190 W/(mK) at 600 °C

4. Chemicals
AS quality, according to EN 13468: content of chlorides less than 10 ppm.

5. Dimensional tolerances
The dimensional tolerances class shall be T2, according to EN 14303.

6. Other requirements
Water vapour diffusion resistance coefficient µ-value, according to EN 14303: µ= 1.
Water absorption, according to EN 1609: maximum 1 kg/m².
Melting point of fibres, according to DIN 4102-17: ≥ 1000 °C.
Longitudinal air flow resistance, according to EN 29053: ≥ 40 kPa∙s/m²

EN designation code:
MW-EN14303-T2-WS1-CL10

Standard Dimensions:
Wired mat length shall be: from 2000 mm to 6000 mm, depending on the thickness.
Wired mat width shall be 500, 900 or 1000 mm.
Wired mat thickness shall be: 60, 80 mm.