Likely new- old- stock recessed cast light fixture compartment. Possible brands include Adams & Westlake (Adlake), Pyle-National, Crouse-Hinds, Edwin W. Guth, General Electric, Westinghouse Unit has brass hinges and screws. Item was acquired in Greater St Louis area at auction from a RR parts collector. #Streetcar, Pullman, Wabash, Frisco
