... fatory AB, AC, SN, PB, N/N, G/G zinc alloy fission lock Products InformationDoor locks,Single locks Used for wooden ... and Installationsuitable for security door, entrance door, antitheft door, anti-fire door, wooden door and interior doorSuitable max. door size is ... as the time passed by. Have the characters of anti-fire, anti-smoke, rustproof, damp-proof, anti-friction and environmental protecting ...