Original hardware trade vintage catalog for THE STANLEY WORKS of New Britain, CT. Manufacturers of Magic Doors, that Open at Your Approach and Close Automatically. Operate when a ray of light, falling on a photoelectric cell is interrupted, the door opens long enough for a person to pass through, and then closes. Used at train stations, building entrance, chain restaurants and shops. Disbound from a large 1938 building material construction book, this unique old two page technical specification brochure would display wonderfully matted and framed. A marvelous addition to your retro architecture and engineering library.