Board: 20 mm ± 0.5 mm, 4000 × 1200 mm (manufacturer datasheet)
Panel facings: 80 µm aluminium foil with glass-fibre mesh, inner and outer (manufacturer datasheet)
Panel surface burning, ASTM E84: flame spread index 15, smoke-developed index 15 (Intertek test report 181030003SHF-002, 2018; tested on the panel, not on an installed duct system)
UL 181 documentation for the duct board (UL file MH63347): rated air velocity 25 m/s; rated pressure +1000 Pa / −750 Pa; maximum side 600 mm without reinforcement
UL 181 listing conditions: above-ground indoor use only; permitted where duct air temperature does not exceed 121 °C (250 °F), or as vertical ducts serving not more than two adjacent storeys
BS 476 Parts 6 & 7 Class 0; flame spread index 14.64 / Class 1 and smoke developed index 13.10 (ANSI/UL 723, ASTM E84)
Other
CFC-free, halogen-free; pH 6.47
QCS 2024 compliance (phenolic duct QCS 2024 compliance datasheet): sections up to 4 m, aluminium invisible flange with PVC H bayonet, acrylic sealant, no gasket.
20 mm ± 0.5 mm thick, 4000 × 1200 mm, with 80 micron aluminium foil and glass-fibre mesh on both faces.
How does the phenolic duct meet QCS 2024?
The phenolic duct QCS 2024 compliance datasheet covers sections up to 4 m, the aluminium invisible flange with PVC H bayonet, acrylic sealant and no gasket.
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