Original door trade vintage catalog for ST. LOUIS FIRE DOOR COMPANY. Main offices were located at 1134-1142 South Sixth Street, St. Louis, MO. Manufacturers of Fire Doors for freight elevator and dumbwaiter openings, warehouse and shipping platform doors, electric operators. The sill leveling device is indispensable and solely responsible for keeping the door, when open, in perfect alignment with the elevator platform and the building sill. The trucking sill of the door is also level with the building floor, thus completely filling in the space between them. This unique 1931 old two page building construction brochure would display beautifully matted and framed. A marvelous addition to your retro architectural and engineering library.