Original 1941 industrial heating trade vintage catalog for the H H ROBERTSON COMPANY.  Main office and plant was located at Pittsburgh, PA.

Manufacturers of Robertson Ventilators.

Products include Round Ventilators, Fan Ventilators, Streamline Ventilators, Rectangular Ventilators, Monito Ventilators, Safety Ventilators, Hoods, Ducts and Louvers, all are fully featured.  Asbestos was used in the manufacture of Robertson Protected Metal and Robertson Galbestos Metal with Asphalt-Impregnated Asbestos Felt.

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 sixteen-page technical brochure would display beautifully matted and framed. Nice cover graphics. A fabulous addition to your retro industrial ventilation library.