Original roofing trade vintage catalog for ALLEN COOLER VENTILATOR, INC. Main office was located in Rochester, MI. Manufacturers of turbines, roof and exhaust fans. Products include Type A ventilator, Type C, Coni-Vane, Electro-Wind, I-Line, Vertical discharge, Staxauster, Lo-Noiz-Level are featured. 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 roofing construction library. Pages are detached and contain a small amount of residual glue on edge. Catalog no. 581.