Established in 1958, Harmsco Filtration Products Inc. is recognized as a worldwide manufacturer of the highest quality residential, commercial and industrial water filtration equipment. As a pioneer in the filtration industry, Harmsco holds numerous U.S. patents for innovative filtration technologies while maintaining high quality and value for the end user. Harmsco pleated cartridges offer more surface area for longer life, increased solids removal and reduced operation costs. They are offered in many cartridge lengths and micron sizes. Harmsco offers a complete line of filter cartridges which are manufactured with FDA listed materials and are NSF-61 listed for public drinking water use. All Harmsco products are tested and validated to assure the highest quality standards.