· 2021. 5. 10. · equivalent to ASTM E84 class 1 and BS476 part 7class 1 flame spread to give a...
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· 2021. 5. 10. · equivalent to ASTM E84 class 1 and BS476 part 7class 1 flame spread to give a 30 minute burn time. Self-Coloured. All QuartzgripT" Moulded Fibreglass grating