Era Double Locking Nightlatch Door Lock 40mm Backset Satin Chrome 183-35-1 Narrow version Double locking nightlatch designed to replace most existing front door locks Ideal for solid or glass panelled wooden doors, offering added security against forced entry Main bolt automatically deadlocks when the door is closed Inside handle can be deadlocked by an anti-clockwise turn of the key from the inside The bolt can be held in the withdrawn position only with the use of the snib feature Backset is the measurement from the edge of the door to the centre of the keyway 6 Pin cylinder with armoured pull - prevents drill attack
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