steel wooden Security door : 1) Steel structure inside 2) MDF board for both side 3)Surface veneered by natural wood skin Wall cave size High quality inner plate, U-style reinforcing rib, MDF wooden doorpanel with tree skin, specialty core inserted lock, quality hinges, sound / heatinsulation comb plate, stainless steel doorsill, reinforced door frame, door overlock serging, the fixed bored of ...