... Board Our Mineral Fiber Boards are produced based on slag wool fiber as the main raw material added with certain additives ... or 300x600mmThickness of Mineral Fiber Board: 6.8mm,7mm,7.5mm,8mm,9mm,10mm,12mm,14mm,15mm,18mm, 19mm, 20mm etc ... /1213mm or 300x300mm or 300x600mm Thickness:6.8mm,7mm,7.5mm,8mm,9mm,10mm,12mm,14mm,15mm,18mm, 19mm, 20mm Density ...