40 years of quality design and development have resulted in new materials, new molding methods, and expertise to create the highest quality cartridge filtration designs available. • Three-piece design available on 2” housings for ease of install • 120 psi pressure rating on both clear and blue housings • Big 4” housings with bottom drain for ease of service • Patented twist off pressure release valve • Complete Packages, Housing Kits, and Cartridges available