Acoustic Mineral Fiber Ceiling Board can be economically loaded with ceiling grids produce by Sinoceling.com into 1x40'HQ. it is made of wet-formed mineral fiber with low density: 220-260kg/m3, including square edge & tegular Edge finish. Mineral fiber board has many features: Strong and lightweight finish; dimensional stable; High humidity resistance; So far, Mineral fiber ceiling tile is easy to be installed with our T24 ceiling tee grid by SINOCEILING, which has been widely applied for offices, schools, hospitals, theatres, music house, power stations and so on.