CLARCOR Inc. is engaged in the marketing and manufacturing of mobile, industrial and environmental filtration products. The Company's segments are Engine/Mobile Filtration and Industrial/Environmental Filtration. The Company's Engine/Mobile Filtration segment manufactures and sells filtration products for on-road and off-road mobile and stationary applications, including trucks, agricultural machinery, construction and mining equipment, marine, automobiles, transit buses, and other industrial and specialty applications. The Company's Industrial/Environmental Filtration segment manufactures and sells filtration products used in industrial and commercial processes, and in buildings and infrastructures of various types. The Company's filters and filter systems are used in commercial and industrial buildings, hospitals, manufacturing processes, pharmaceutical processes, clean rooms, airports, shipyards, and refineries, other oil and natural gas facilities, among others.