Original old heating trade vintage catalog for the AREX COMPANY. Main office was located at 612 North Michigan Avenue, Chicago, IL. Factory and warehouse was located in Gary, IN. Industrial ventilation engineers. Manufacturers of louvers, temperature control & fire dampers, gravity and power roof ventilators. Products include Arex-Austor original siphonage, Skyline air intake & pressure relief, centrifugal power and Accelerant louver. Unbound from a large 1958 architectural catalog, this unique old eight page technical specifications brochure would display beautifully matted and framed. Nice cover graphics. A fantastic addition to your retro ventilation equipment library. Pages are detached and may contain a small amount of residual glue on edge.