Abstract: A door pivotable open in one direction is made unhingeable from an opposite side. The door is mounted in a door frame having stop molding rebates disposed on different sides of the door for the left and right sides of the frame, and no stop molding or rebate on the top. The door is hinged at the left or right side by means of a mating pivot pin and receptacle in the door and frame or vice versa. A mechanism is accessible at least on the outer face of the door when the door is closed, to disengage the hinge parts and release the door. The door can also include alternative hinges on opposite edges of the door, the door being openable when one set of hinges is disengaged.