The Unicel C-9410 Cartridge Filter traps waste and dirt from the pool to provide fresh, filtered water for swimming. Its heavy-duty polyester material allows long-lasting performance. With a pleat count of 155, it offers improved filtering capacity and reduced filter pressure drop. It is made from durable and sturdy synthetic fiber filter media that is specially designed for pools, offering optimum dirt catching ability. You can easily reuse and clean this filter for long-term uninterrupted use. You can conveniently use this filter as a replacement part for Pentair Pool Products R173215, American Pool Products 59054200, Pac Fab Pool Products 59054200, Sta Rite R173215 filter system.