Original insulation trade vintage catalog for G. W. GAIL, INC. Main office was located in the Industrial Building, Baltimore, MD. Manufacturers of Pi-R Sealing Strip for Windows and Doors. Excludes noise, dirt, water, air and light. Numerous illustrations and product details are provided. Unbound from a large 1941 architectural catalog, this unique old two page technical brochure would display wonderful matted and framed. Nice graphics. A terrific addition to your retro window and door weatherstrip library. Pages are detached and may contain a small amount of residual glue on edge.