Original hardware trade vintage catalog for GRAND RAPIDS HARDWARE COMPANY. Main office was located in Grand Rapids, MI. Manufacturers of Ven-Trol-Gear, Ven-Trol-Hinge for outward projecting panel and casement vents, panel, hopper, sash and all types of double-hung windows. Special features detail, specs provided with illustrations. Specially designed to provide the most efficient and easiest opening mechanism for modern residential, monumental and commercial buildings. Cam latch no. 5021 and hopper vent lock LM-28-H also shown. Saw tooth drive-type pulleys with cone bearings, superior dual sash balance, levelseal lock and lift are discussed on back page. Disbound from a large 1956 home hardware catalog, this unique old four page technical specifications brochure would display wonderfully matted and framed. A marvelous addition to your retro hardware library. Pages are detached and may contain a small amount of residual glue on edge.