World Class Filter Producer Located on 11.4 acres in Lancaster, PA. Approximately 80,000 sq. ft. is dedicated to manufacturing; 80,000 sq. ft. for maintaining our inventory and; 8,000 sq. ft. for office. Current employment: 175 Premier producer of filters for the Railroad and Marine industries. Offers replacement cartridges for all major dust collector manufacturers. Wholly owned subsidiary of CLARCOR.