... performance, comfortable to live in.9).Sunken proof.10).Non-dust, Easy clean.11).Good light reflection. 4. Length and width595x595 mm ... 605x1210 mm 5. Thickness:7.0 mm , 7.5mm, 8.0mm, 8.5mm, 9.0mm, 9.5mm, 10.0mm, 10.5mm, 11.0mm, 11.5mm, 12.0 mm 574 PVC Gypsum Ceiling Board