Abstract: An arrangement for fastening a glass in a bulkhead lighting fitting, wherein three small columns are fixed with and project perpendicularly from the bulkhead fitting and are arranged substantially at the apices of an equilateral triangle. The small columns each include a sidewardly opening groove to accommodate an edge of the removable glass. One of the small columns has a rotary head movable between open and closed positions, the head when in the open position permitting the glass to be moved downwardly into the groove, whereupon rotation of the head into the closed position results in the edge of the glass being confined within the groove.