Narrow Style Yale Nightlatch 84
Yale no.84 dark grey nightlatch supplied complete with a cylinder and two keys. Suitable for door thickness from 32-57mm. Deadlocking by snib. Key operation from the outside, lever handle operation from the inside. This lock is designed to fit all solid wooden doors.
The centre of the keyhole must be 40mm from the edge of the door, and the overall length of the lock body to be fitted to the inside of the door is 62mm. This lock should preferably be used in conjunction with a British Standard mortice lock (BS3621).