Specifications: 1) Material:PVC gypsum board 2) Thickness: 7mm / 12mm 3) Size: 595 x 595mm, 595 x 1195mm, 603 x 603mm, 603 x 1212mm 4) Size tolerance: length<± 2mm, width<± 2mm, thickness<± 0.5mm 5) Weight: 7kg/sqmt6.27kg/595x595x7.5mm 6) Strength: >160N 7) Character: non-flammable B1, in accordance with Chinese standard GB8624-1997 8) Installation: match with ceiling T-bar 9) shrink packing with 8pcs in one carton