... ): Thickness:9mm,10mm,12mm,15mm,18mm, Size:2440x2440;1250x2500 Density:680-730kgs/cbm OSB(oriented strand board):Thickness: 9mm, 10mm, 11mm ... (Waterproof glue),Melamine glueGrade: OSB-1, OSB-2, OSB-3Density: 680-730kgs/cbmUsage:can be used for roof decking,roof sarking ...