Whole House Systems
  • Drinking Water Systems
  • Replacement Filters
  • verified_user Warranty Info
    Warranty Guarantee: Unconditional Guarantee for Life of the Product


    Tier1 RFC-20BB 20 X 4.5 Radial Flow Granular Activated Carbon Replacement Filter (25 micron)

    Fits most standard housings built for 20-inch x 4.5 inch filter cartridges
    • Ships fast!

    • Nominal 25 micron Radial Flow Carbon Water Filter Cartridge

    • Reduces chlorine taste and odor to provide better tasting water throughout your home

    • This cartridge features a unique design that reduces carbon fines in filtered water

    format_list_bulleted Features & Specs
    Package Qty: 1
    Manufacturer: Tier1
    Manufacturer's Id: RFC-20BB
    UPC: 641945742428
    Actual Size (in): 20 inches (Length) x 4.5 inches (Outside Diameter)
    Media: Radial Flow Granular Activated Carbon
    Primary Filter Media: Granular Activated Carbon
    Operating Temperature (°F): 40 - 125
    Operating Temperature (°C): 4.4 - 51.7
    Warranty Guarantee: Unconditional Guarantee for Life of the Product
    Brand: Tier1
    Advertised Size: 20 x 4-1/2
    Length (in): 20 in
    Outside Diameter (in): 4.5 in
    Width (in): 4.5 in
    Materials of Construction: Porous Polyethylene
    Maximum Temperature (f): 125
    Media Type: Carbon Filter
    UPC's For Search: 051678247433
    Country of Origin: Taiwan
    Micron Rating Nominal: 25
    Flow Rate (gpm): 4.0
    Includes: One Tier1 20 x 4.5 inch granular activated carbon replacement filter
    description Instructions
    1. Turn off water supply. Press red pressure-relief button (if present)
    2. Unscrew housing. Remove large o-ring, wipe clean and set aside
    3. Discard used filter cartridge. Wash housing with dish soap and warm water using a nonabrasive sponge or cloth. Rinse thoroughly
    4. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly
    5. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove
    6. NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove
    7. Insert new filter cartridge
    8. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge
    9. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation
    warning_amber Contaminants Reduced
  • Chlorine
  • Rust And Corrosion
  • filter_alt Filter Life
    Filter Life (gallons): 100000
    Filter Life (months): 6 months
    verified_user Warranty Info
    Warranty Guarantee: Unconditional Guarantee for Life of the Product

    Prop65 warning applies to products that contain carbon media. Click here for more details

    WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov


    Tier1 RFC-20BB Filter Advantages

    The RFC-20BB Whole House Filter Replacement Cartridge by Tier1 is an ideal water filtration solution. The unique design allows a greater reduction of carbon fines. If you have had significant issues with chlorine taste and odor the RFC-20BB whole house filter replacement cartridge by Tier1, will make your water taste great. This filter provides superior-quality water compared to other aftermarket filters. This simple-to-install filter needs to be changed once every six months, or every 100,000 gallons, whatever comes first. Be sure to order this affordably priced filter today!


    Standardized Filter Sizing

    The 20 X 4.5 granular activated carbon replacement filter by Tier1 is built to fit 20-inch x 4.5-inch filter housings. This standard sizing allows this filter to easily replace existing styles of whole house filters for housings requiring 20 x 4.5 inch filters. The RFC-20BB goes to work immediately providing cleaner, fresher and better tasting water for up to six months. Enjoy cleaner better tasting water with your whole house replacement filter today.

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

    TIER1-RFC-20BB   is comparable with the following part number(s)