Original hardware trade vintage catalog for VONNEGUT HARDWARE COMPANY of Indianapolis, IN. Manufacturers of Von Duprin Self-Releasing Fire Door Exit Devices. Drop forged brass or bronze. Vertical rod combinations for double entrance doors opening outward, Mortise Lock Combinations. Disbound from a large 1938 construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro architectural design library.