Calcium silicate board 1220*2440mm Size:1220*2440*4.5-18mm Feature:fireproof,waterproof,soundproof,high strength,durability ... Materials: quartz powder,cement,mica,calcareousness,glassfiber,etc.Main Dimension: 1220*2440/1200*2400mm for partition wallThickness: 4.5-18mmDensity: 900-1200kg ... hotel, restaurant, hospital, theater,warehouse, apartment building and so on. 1220*2440mm Calcium silicate board