Abstract: A vapor-liquid contact tray is provided with at least two tray panels that are releaseably together along their overlapped margins by a locking hinged joint. The joint is formed by fingers in one tray panel that extend through slots located in the other tray panel. Offset bends are formed in the tray panels so that the overlapped margins do not extend above the top surface of the tray. The hinged joint includes a locking mechanism that prevents lateral separation of the tray panels once they have been releaseably joined together. The locking mechanism is formed by a downturned locking flange positioned between the fingers in one of the tray panels and extending downwardly into and, preferably through, openings located in the overlapped margin of the other tray panel.