Ventilation Equipment and Systems – Commercial
A special application ducted fan assembly, with rubber mounted, centrifugal, high static pressure fan, hub mounted, shaded pole electric motor and high temperature, thermal disk limit control, in custom formed housing with baked, brown wrinkled enamel, complete with 110 volt line cord and plug, illustrating the sophistication of the small application, air handling equipment available by the mid 1950’s, with a well developed network of OEM parts suppliers feeding the industry. 1957.