Original plumbing trade vintage catalog for THE H. L. G. COMPANY. The main office and factory was located in Kalamazoo, MI. Manufacturers of Zeolite Water Softening Equipment. Products shown include Velvet Full Electric Automatic Water Softer, Type D, C, B, Kalamazoo Water Softener Type KB and KA. Unbound from a large 1938 architectural catalog, this unique old one page technical brochure would display beautifully matted and framed. A fantastic addition to your retro plumbing equipment collection.