With System:3 Modular Media Filters - SM Series, Sta-Rite brings you the product that makes Ultra-Capacity Filtration a reality. No longer simply "cartridges," Sta-Rite's advanced technology has brought an entirely new class of filtration to the industry. Sta-Rite's modular media concept incorporates the latest in media science, perfectly balanced flow, and an integral manifold design: namely, Ultra-Capacity Filtration. This filtration concept puts totally care-free operation within reach of today's pool owners. Modular Filter Tanks allows for quick change of filter medias without changing the tank. Contemporary style and matte black finish looks attractive in any pool settingAn Eco Select Brand: Water flows very efficiently through System:3 Modular Media Filters - SM Series filters allowing the use of smaller pumps or lower pump speeds to minimize energy use. And when consumers rinse cartridges rather than backwash, they can significantly reduce water use, too.