Original heating trade vintage catalog for FERRO-CO CORPORATION, was located at 26 Wythe Avenue, Brooklyn, NY. Manufacturers of Grilles, Recessed Radiator Enclosures and Radiator Hangers. Semi-recessed, free standing, wall hung, window sill and fronts. Type NBS, BSM with Damper Moulding, RS, BG with Damper. Disbound from a large 1938 heating catalog, this unique old one page technical brochure would display wonderfully matted and framed. A marvelous addition to your retro heating equipment library.