Original heating trade vintage catalog for FULTON SYLPHON COMPANY, was located in Knoxville, TN. Manufacturers of Automatic Temperature Controlling Instruments and Packless Expansion Joints. For storage hot water heaters, mixers, air conditioning, pressure regulation, heat systems and refrigeration control. Disbound from a large 1938 industrial heating catalog, this unique old two page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro heating equipment library.