Original window trade vintage catalog for VENTO STEEL SASH COMPANY. Main office and plant was located in Muskegon, MI. Manufacturers of Puttyless windows, bound screens and operating devices. Window with ventilating sections illustrated, showing types and product details. Numerous images, illustrations and architect specifications are provided. Unbound from a large 1931 architectural catalog, this unique old four page technical brochure would display wonderful matted and framed. Nice graphics. A fabulous addition to your retro steel windows library. Pages are detached and may contain a small amount of residual glue on edge.