Rockfon Arctic - Standard surface ideal for most common applications. The stone wool ceiling tiles offer a number of innovative and sustainable benefits combined with an ability to deliver good acoustics, fire safety, durability and several other benefits. The acoustical ceiling tiles are made from stone wool and features good sound absorption while featuring excellent sag, mould and mildew resistance. Rockfon Acoustic Ceiling Tiles weigh from 1.6kgs per m2** which helps towards achieving the relevant seismic standards for suspended ceilings in the NZ Building Code. Following this standard means an installed ceiling complies with the Building Code and will help safeguard people from injury or fatalities caused by structural failure.**(in comparison to other Wet-felted panels, weighing 4.7kg per m2, 5.4kg per m2 ) Rockfon Acoustic Tiles are designed to fit into any of the Approved Seismic Ceiling Grids on the Market.