From Yale, the 85 Series Deadlocking Nightlatch is a widely used front door security lock designed for everyday access with added control. It is key operated from the outside and lever handle operated from the inside, making it straightforward to use for regular entry and exit. On closing the door, the latch automatically deadlocks to help prevent it being forced back. A snib function (bolt hold-back button) allows the latch to be held back when required. For additional security, the inside handle can also be deadlocked by a reverse turn of the key in the cylinder; when set this way, the latch cannot be opened from the inside and can only be opened from the outside with the key. Supplied with a 1109 Cylinder and available in Brasslux, Chrome or Dark Metal Grey (DMG). The 40mm backset (measured from the edge of the door to the centre of the keyhole) is typically used where space is restricted, such as on a narrow glass panelled door. Key features Key operated from the outside and le...