This company has a series on in-line duct fans made to work in a variety of rooms where temperature control ids a problem. They install easily in the home or office or in commercial applications. Different materials are used in the construction of the fans, each one ideally suited to its intended use. Options such as on/off switches and several different sizes are available.
Suncourt Inc., P.O. Box 40, Durant, IA 52747; 319/785-6466.