Cylinder Drawback Locks
Nightlatch drawback lock uses a simple pull to withdraw the latchbolt, making them particularly suitable for glass panel doors. Latchbolt is withdrawn by pull handle inside or key from outside. Deadbolt is locked or unlocked by key from either side. One full turn of the key operates first throw and a second full turn double throws the bolt. Latchbolt can be held back by anticlockwise turn of the handle whilst the bolt is withdrawn. Drawback Nightlatches are only available from Union with either a brass, white and champagne cases with a case width of 73mm or 92mm.