The apparatus includes: a plate having a slot defining an axis and adapted to be mounted to a face of a door having an aperture disposed adjacent the door edge such that the slot communicates with the aperture and the axis is disposed normally to the edge; an assembly secured to the plate; a bolt slidably mounted in use to the assembly for axial movement between: a first position, wherein one end of the bolt projects beyond the edge and the other end of the bolt is disposed in overlying relation to the slot, relatively proximal to the edge; and a second position, wherein the one end overlies the door and the other end is disposed in overlying relation to the slot relatively distal to the edge; and a handle connected to the bolt and defining a pair of grippable portions that, in use, project outwardly from the door faces.