Product: mineralwool acoustic ceiling board Standard sizes:600mmx600mm/600x1200mm 24"x24"/24"x48" Edge detail: Angled Tegular, Beveled Tegular, SuqareLay-in, NormalConcealed and exceedconcealed Surface pattern: different designs avaliable. Feature 1.High light-reflectance 2.nondirectional pattern designed ,easy installation 3. fire resistance 4.Adopt high quality mineral wool,100% asbestos-free 5.light-weight and easy to be cut. 6.Withstand condition with relative humidity up to 99%. 7.Excellent sound absorption ability and competitive price.