Era double locking nightlatch this double locking nightlatch is designed to replace most existing front door locks and is ideally suited for glass panelled wooden doors it features an easy to grip internal lockable handle offering added security against forced entry the main lock bolt is ldquoautomaticallyrdquo deadlocked when the door is closed preventing the main bolt being retracted by a credit card the inside handle can be deadlocked by an anti clockwise turn of the key from the ins