Amazon.com: 25 Micron Sediment Water Filter Cartridge 10"x 2.5", Four Layers of Filtration, Removes Sand, Dirt, Silt, Rust, Made from Polypropylene for any RO Units or Whole House Water Filtration Systems 6
RainFlo Basic 20 inch 25 Micron String Wound Filter Cartridge - Rainwater Collection and Stormwater Management