Original old heating trade vintage catalog for the AREX COMPANY. Main office and factory was located at 28th Floor, 333 North Michigan Avenue Building, Chicago, IL. Manufacturers of Accelerant louver roof ventilating units. Easy to operate, no sticking, practically indestructible. Unbound from a large 1933 architectural catalog, this unique old one page technical specifications brochure would display beautifully matted and framed. A fantastic addition to your retro ventilating equipment library. Light damp stain on page edges.