ReliaBilt 30-in x 80-in Steel Left-Hand Inswing Primed Prehung Single Front DoorReliabilt entry doors offer an unbeatable combination of security, energy efficiency and lasting protection An internal 12 in solid wood lock block and a hidden reinforced steel plate in the door frame improve security and resistance against forced entry Every door is filled with a fully insulted core to provide a protective barrier from heat and cold and exceptional insulation from outside noise Steel doors are the easy to care for low maintenance