Original heating trade vintage catalog for ILG ELECTRIC VENTILATING COMPANY. General office and factory was located at 2849 North Crawford Avenue, Chicago, IL. Manufacturers of Air Conditioning and Cooling Units, Fans, Blowers, Unit Heaters and Kitchen Ventilators. Disbound from a large 1938 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.