Clarcor (NYSE:CLC) is a Tennessee based manufacturer, marketer and servicer of filtration products & systems and containers. Though traditionally a producer of plastic and metal containers (currently part of packaging division John Lewis Clark named after the founder of Clarcor) the company entered the filtration market in 1981 after acquiring J.A. Baldwin Manufacturing Company followed by Dahl Manufacturing and Michigan Spring Company in 1986. In 1987 it renamed itself Clarcor from Clark. Between two filtration business segments; Industrial-Environmental and Engine-Mobile (trains, busses, trucks, cars, as well as commercial equipment) the products it makes filter sewage, gas, oil, microbials and other pollutants out of water (in lakes and engines) and air. Since 1991 it has had operations abroad (beginning with Australia where it purchased 1/5th of the largest filtration company there GUD Holdings Ltd. in 1991). Since 1993 it has been involved in the manufacturing of environmental control systems (Airguard Industries, Inc.).

2009 and 2006 revenue was nearly identical although that was mostly the result of negative growth (decreases of 14.3% in sales and 30% in operating profit) between 2008 and 2009.^[1][2]

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