Mineral fiber ceiling board Specification: 1) Regular Size: 595x595mm,600x600mm, 603x603mm, 300x600mm, 600x1200mm 2) ... , 12mm, 14mm, 15mm, 16mm, etc. Features: 1. Material :mineral fiber sound insulation board 2. Surface :a variety of surface patterns available 3 ... the thickness 8. Light reflectivity: >=85% 9. Installation: match with ceiling t-grids 10. Packing Type: inner is carton and outer ...