magnesium oxide board,fireproof board,magnesium fireproof board Features: 1) 100% asbestos free 2) Non-combustible: PSB, GB8624, CLASS A 3) Moisture resistant 4) Excellent impact resistant 5) Excellent Sound insulation 6) High dimensional stability 7) Good surface finish 8) Easy to work, fix and decorateSpecifications: 1) Thickness: 3 - 20mm 2) Max. width: 1,220mm 3) Max. length: 3,000mm 4) Edges: square / bevelled / tapped