Original heating trade vintage catalog for SHEPLER MANUFACTURING COMPANY, was located at 1312-14 Sheffield Street, Pittsburgh, PA. Manufacturers of electric heaters, ventilating fans designed for quick and easy installation. No. 9 and 10 wall fans are pictured. Disbound from a large 1952 electrical construction materials book, this unique old one page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro electric equipment library.