Original 1941 industrial heating trade vintage catalog for the GRINNELL COMPANY, INC.  Main office was located at 260 West Exchange Street, Providence, RI.  (Founded 1850).

Manufacturers of Industrial Unit Heaters.

Products include the Automatic Thermolier, Duotherm Control, Air Conditioning Type Thermolier, Electric Type Thermolier, De Luxe Type Thermolier, Industrial Type Thermolier, Factory Type Thermolier, all are fully featured.

Has numerous product images, illustrations, description, application and specifications charts to provide product details.

Unbound from a large rare 1941 Industrial Catalog, this unique old thirty-six page technical brochure would display beautifully matted and framed. Awesome cover graphics. A fabulous addition to your retro industry library. (Catalog 5-E).