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Mineral ceiling tiles and planks are factory produced using the wet felt process. They meet the requirements of /DIN 18177/ and are placed on the market in accordance with /EN 13964/ as well as German legislation on hazardous substances. Mineral tiles and planks consist of mineral wool(s), fillers and binders. The Sierra OP (17mm) surface has a smooth white appearance and is available in a range of different edge details; Board, Tegular, MicroLook 90, and SL22. For the placing on the market of the product in the European Union/European Free Trade Association (EU/EFTA) (with the exception of Switzerland) /Regulation (EU) No. 305/2011 (CPR)/ applies. The product needs a Declaration of Performance taking into consideration /EN 13964/ Suspended ceilings - Requirements and test methods and the CE marking.