Spread of flame
Standard acoustic panels will meet Building Regulations Class 3 flame spread requirement without further treatment. They can also be given a special factory-applied lacquer finish to achieve Euroclass B (Class 0 equivalent) or Euroclass C (Class 1 equivalent) performance in accordance with EN 11925-2 and EN 13823 respectively. This treatment does not affect acoustic performance or surface appearance. The fire-retardant MDF core is dyed pink for identification, and this will be visible in the perforation holes but is normally inconspicuous.
For more information on flame spread requirements see Class 1 and Class 0 performance, and for more on Euroclass see Euroclass fire rated panels.