Original window trade vintage catalog for GENERAL ALUMINUM CORPORATION. (Subsidiary of Overhead Door Corp.) General office and plant was located in Dallas, TX. Manufacturers of windows and sliding glass doors. Thermally Improved Windows. Products include Thermal II & III, Sun Garden windows Series 3700, Garden Center Series 5800, Sunlite Studio Window Series 318, 319, Series 1000 Single Glazed & 1900 Spaceglass Windows, Series 500 Reversible Sliding Glass Door are featured. Numerous images, illustrations, products details and architect specifications are provided. Unbound from a large 1982 architectural catalog, this unique old eight page technical brochure would display wonderful matted and framed. Nice cover graphics. A terrific addition to your retro window library. Pages are detached and may contain a small amount of residual glue on edge.