Material: Cold-rolled steel, honeycomb inside or fireproof mineral wool Surface finish: Heat-transfer printing or power coating Thickness of door leaf: 50/70/90mm Door leaf steel thickness: 0.5---1.0mm Door frame steel thickness: 0.8---1.8mm Lock: Special AB machine lock, which consists of additional 13-15 locking points Accessories: Hinges, locks, handles, doorbell, rubber seal Opening direction: Left inside, Right inside, Left outside, Right outside Opening degree: 90 degrees or 180 degrees Suitable for different wall thickness Colors: Diversified colors available Sizes: Other sizes also acceptable according to customers' requests