{"nrhp_refnum":"80003228","name":"Tiffin Art Metal Company","other_names":[],"category":"building","location":{"address":"450 Wall St.","address_restricted":false,"city":"Tiffin","county":"Seneca County","state":"OH","lat":41.12795680700003,"lon":-83.18757368899998,"geom_source":"nps_gis"},"listed_date":"1980-01-07","is_nhl":false,"nhl_designated_date":null,"areas_of_significance":["Industry","Architecture"],"significance_levels":["local"],"summary":{"what_it_is":"A complex of one- and two-story brick industrial buildings at 450 Wall Street in Tiffin, Seneca County, Ohio, home to a sheet metal manufacturer. The oldest part dates to 1903 and incorporates buildings of the former American Clay Company.","why_significant":"The complex was nominated as one of thirteen early industrial properties in Tiffin. It represents a firm founded in 1903 that made stamped metal ceilings, architectural sheet metal, and in 1927 developed an all-steel prefabricated billboard panel. The company grew through later purchases and mergers and continued as a major local manufacturer.","narrative":"Tiffin Art Metal is a sprawling complex of one- and two-story brick factory buildings at 450 Wall Street in Tiffin, Ohio. Its oldest building dates to 1903, was burned about 1942, and was rebuilt as two stories with part of the old walls retained. Neighboring buildings came from the American Clay Company, which left for Texas and whose buildings the metal firm then took over. By 1978 the complex totaled 175,000 square feet. The company was founded in 1903 by Fred W. Conradt, Albert V. Conradt, and George Kalbfleisch. Early products included stamped metal ceilings, skylights, barn ventilators, and canopies and cornices for theatres and hotels; many of the ceilings survive in downtown Tiffin stores. The firm moved to Wall Street in 1914 and in 1927 developed an all-steel prefabricated poster panel. Later owners included Springfield-Green Industries and Mid-Continent Manufacturing, and it now operates as Tiffin Metal Products. It was listed as part of a group of Tiffin industrial buildings.","period_of_significance":null,"architect_builder":null,"architectural_style":null,"criteria":[],"status_note":"Still in industrial use; the company operated as Tiffin Metal Products and totaled 175,000 square feet in 1978.","vacant_flag":false,"machine_generated":true,"model":"claude-sonnet-5-5","prompt_version":"v1.0-2026-10-29","generated_at":"2026-10-29 02:53:12.458064-05","source_pdf":"https://s3.amazonaws.com/NARAprodstorage/lz/electronic-records/rg-079/NPS_OH/80003228.pdf"},"photo":null,"district":null,"sources":{"nps_snapshot_date":"2026-05-22","nara_catalog":"https://catalog.archives.gov/id/71986170","wikipedia":null,"wikidata":null},"indexable":true,"url":"https://nationalhistoricalregister.com/ohio/seneca-county/tiffin-art-metal-company-80003228/"}