Original plumbing trade vintage catalog for R. C. MAHON COMPANY.  Main office and plant was located in Detroit, Michigan.

Manufacturers of Cast Iron Roof Sumps. Product features include sizes available tapped to fit either 3,4,5 or 6-in standard wrought iron pipe, a 16-oz copper apron, with or without gravel stop, Dome strainer may be removed without disturbing sump bowl or surrounding roofing, and Openings in dome strainer are equal to three times the area of the conductor pipe, insuring full capacity of the drain at all times. Has product image with detailed descriptions, illustration, applications, specifications and dimensions provided. Unbound from a large 1935 architectural product catalog, this unique old one-page brochure would display beautifully matted and framed. Nice graphics. A fantastic addition to your vintage construction materials library.