Yale standard nightlatch dmg satin chrome cylinder 60mm backset box
This yale nightlactch is a commonly used latch due to its automatic deadlock and snib functions operated by key from the outside and lever handle from the inside the inside handle can additionally be deadlocked providing even further security please note this latch has a 60mm backset which is the measurment from the edge of the door to the direct centre of the keyhole
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