Original heating trade vintage catalog for AMERICAN COOLAIR CORPORATION. Main office and factory was located at 1608 Mayflower Street, Jacksonville, FL. Manufacturers of rapid air change exhaust fans needed for effective cooling. Type S, O, OT, Model 28-W, Direct drive fans. Pioneer in V-belt fans and charter member of Propeller Fan Manufacturers Association. Disbound from a large 1948 architect construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electrical heating equipment library.