These union 2294 2 lever mortice bathroom sashlocks are suitable for timber doors hinged on the left or right up to a thickness of 54mm and requiring turn and emergency release functions they can be deadbolt locked or unlocked by separate turn not supplied from inside and also deadbolt unlocked by separate emergency release from outside not supplied the 11mm reversible latchbolt bolt is withdrawn by lever handle from either side and the two way action is suitable for lightweight knobs or sprung