Dear Sir/Madam, Function:Smoke-Proof,Sound-Absorbing,Heat Insulation,Soundproof,Mould-Proof,Waterproof,Fireproof,Moisture-Proof Feature:Perforated Ceilings,Artistic Ceilings,Integrated Ceilings Ceiling Tile Shape:Square Ceiling Tile Type:Gypsum Board Type:Ceiling Tiles Materials:Gypsum Power Imperial:603*603, 603*1213 Metric:595*595, 595*1195 Thickness:7mm,8mm, 9mm Edge Detail:Square Type Lay-in Density:80% Heat Conducting: Show More