1964     Airguard Industries, Inc. was founded in Louisville, Kentucky with two employees as a distributor of air filtration aftermarket products.
1968     Airguard began manufacturing its own line of air filter products.
1990     Airguard opened its 44,500 square feet manufacturing facility in Dallas, Texas.
1993     CLARCOR acquired Airguard allowing the company to take advantage of business generated by the passage of the EPA Clean Air Act.
1995     Three separate facilities in Corona, California consolidated into one manufacturing and distribution facility – an 84,000 square foot facility also in Corona, California.
1998     CLARCOR acquired Air Technologies, Inc. (ATI) of Ottawa, Kansas, a producer of air filtration products for painting applications.
1999     CLARCOR paid Mark IV Industries, Inc. for Purolator Products Air Filtration Company, a producer of a wide variety of air filters used in heating, ventilation, and air conditioning systems.
2000     A 290,000 square foot manufacturing and distribution facility opened in Campbellsville, Kentucky.
2004     CLARCOR created a new business, CLARCOR Air Filtration Products, and folded Airguard, Purolator and ATI under this new business.
2008     CLARCOR Air Filtration Products consolidated its New Albany, Indiana and Jeffersontown, Kentucky facilities into one manufacturing, distribution and office facility – a new 610,000 square foot facility in Jeffersonville, Indiana.
2010     The Corona, California facility expanded by an additional 46,000 square feet to increase its production and distribution capabilities.
2010     CLARCOR Air Filtration Products acquired a 50,000 square foot facility across the street from their Corona, California facility to increase its production and distribution capabilities—bringing the Corona, California facility to a total of 180,000 square feet.
2012     The Dallas, Texas facility expanded by an additional 45,000 square feet to increase its production and distribution capabilities.

Balston 23/75R Steam Filters - Installation, Operation and Maintenance Manual