Front side of the leaf : 10 mm MDF Back side of the leaf :10 mm MDF Door leaf is 1,2 mm CCR A-1 DKP Sheet .there are 8 pieces 20*50 mm metal profile inside the wings Leaf thickness : 8,5 mm Case covered 10 mm MDF on steel Door frames 1,2 mm CCR A-1 DKP sheet Lock :Monoblock lock system Hinges : 3 hinges that can open 180 degrees security pins : hinge sides are powered by 4 steel security pins Rubber : the case is whole rubbered Insulation: rockwool for heat and sound insulation Certificate: TSE-12655 , SO 9001: 2008 Whatsapp number 00905496124253