Original 1949 heating trade vintage catalog for the DUPLEX PRODUCTS COMPANY.  Main office and plant were located at 17255 Stephens Drive, East Detroit, MI.

Manufacturers of Heating and Ventilation Fan Equipment.

Products include Ventilators for the Kitchen, Lavatory. Bathroom and Recreation Room.

Has product images, illustrations, description, applications and specifications to provide product details.

Unbound from a large rare 1949 Architectural Catalog for Builders, this unique old four-page technical brochure would display beautifully matted and framed. Awesome cover graphics. A fabulous addition to your retro heating & ventilating equipment library.