... *600,600*1200mm ISO14001:2004 ISO9001:2008 CE Our mineral wool acoustic board has the following outstanding features: Stylelittle-star series,lovely ... edge,concealed edge,shiplap edge,and liner shiplap edgeMineral Fiber Content91%Density280-320kg/m3ColourwhiteNRC0.4-0.6depending on the ... and fungistatic coated panelsCertificateISO14001-2004,ISO9001-2008,CE soundproof mineral wool acoustic board