Whole House String Wound Sediment Filter 4.5" x 20", 25 Micron

  • Effective removal of fine sediment, sand, rust, silt & scale particles

  • String wound around polypropylene core to provide greater surface area for improved efficiency and durability

  • Superior dirt-loading capacity over standard wound cartridges

  • Effectively reduces fine sediment from a variety of fluids

  • Fits in all standard 20" Whole House Filter Housings

  • 25 micron nominal rating

  • Listed Price:$34.95

Options & Upgrades

New O-Ring for a perfect seal of RO filter housing



    String-Wound sediment Filter Cartridge

    Our FI-WP20-BB-25M filter cartridges are manufactured from a durable polypropylene cord that is wound around a rigid polypropylene core. These types of cartridges are wound in a precise pattern around the core to provide greater surface area. The result is higher dirt-loading capacity and greater efficiency than standard wound cartridges.

    String-wound cartridge styles are capable of accommodating flow rates between 7 and 10 GPM with very low pressure drop. They are also suitable for a wide variety of sediment filtration applications, and are often used in residential, commerical and industrial settings as a pre-treatment or stand alone filter. When used for the home, they are effective in removing sediment from both municipal and well water sources.

    The FI-WP20-BB-25M filter will fit in our whole house 20" standard big housings.

    Benefits and applications

    • Reduce fine sand, dirt, silt, rust, and scale particles
    • Removes sediment from a variety of fluids for different applications
    • Reduced staining and easier cleanup for your showers and sinks
    • Protects other water filters, heaters and appliances from sediment
    • Withstands temperatures up to 145ºF
    • High flow filtration (very little pressure drop)
Performance & Specification

    Cartridge Specifications and Performance Data






    4.5"D x 20"L


    5 lbs

    Filter Media 

    Polypropylene Fiber Cord

    Micron Rating

    25 micron



    Temperature Rating

    40º F to 145º F

    WARNING: Do not use with water that is microbiologically unsafe or of unknown quality without adequate disinfection before or after the system.

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