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


    20 X 4.5 Carbon Block Replacement Filter by Tier1 (10 micron)

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

    • Powder Activated Carbon filter media

    • Reduces contaminants down to 10 microns

    • Provides better tasting water throughout your home

    format_list_bulleted Features & Specs
    Package Qty: 1
    Manufacturer: Tier1
    Manufacturer's Id: EPM4-20BB
    UPC: 700355940999
    Actual Size (in): 20-inches (length) x 4-1/2 inches (outside diameter)
    Media: Powder Activated Carbon
    Primary Filter Media: Activated Carbon Block
    Operating Temperature (°F): 40 - 180
    Operating Temperature (°C): 4.4 - 82.2
    Warranty Guarantee: Unconditional Product Guarantee for Life of the Product
    Brand: Tier1
    Advertised Size: 20 x 4-1/2
    Depth (in): 4.5 in
    Length (in): 19.58 in
    Outside Diameter (in): 4.5 in
    Width (in): 4.5 in
    Materials of Construction: Gaskets made from Buna-N and Polyethylene outer netting
    Media Type: Carbon Filter
    UPC's For Search: 700355940999
    Country of Origin: China
    Micron Rating Nominal: 10
    Flow Rate (gpm): 4.0
    Includes: One 20 X 4-1/2 Inch Carbon Block Replacement Filter by Tier1
    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. Fill 1/3 with water. Add about 1 tablespoon of bleach and scrub to disinfect. Rinse thoroughly.
    4. Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove.
    5. Insert new filter cartridge.
    6. Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge.
    7. Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation.
    warning_amber Contaminants Reduced
  • Chlorine
  • Dirt Sand Sediment
  • Sand
  • Sediment
  • filter_alt Filter Life
    Filter Life (gallons): 30000
    Filter Life (months): 6 months
    verified_user Warranty Info
    Warranty Guarantee: Unconditional Product 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 EPM4-20BB Filter Advantages

    The Pentek EPM-20BB comparable water filter by Tier1 is a 20 x 4.5 inch whole house powder activated carbon water filter. This filter is ideal for city and suburban water applications, the EPM4-20BB by Tier1 reduces contaminants ranging from dirt and sediment to chlorine taste and odor. The powerful EPM4-20BB even reduces impurities down to 10 microns, rejecting contaminants larger than this size from making it into your drinking water. As a whole house cartridge you will receive filtered water throughout your home. Receive better quality filtered water from every faucet and order your replacement filter today!

    Carbon Filter Media

    Carbon media, whether as granular activated carbon or as a carbon block functions as a fantastic water filtration media due to its incredibly high porosity. This high porosity maximizes the surface area contaminants are exposed to and ensures that contaminants have a great chance of being captured and reduced from your drinking water. Carbon filters are known for being effective at reducing the unpleasant taste and odors associated with city water chlorine treatment. If you are looking for better tasting water with excellent contaminant reduction try out a carbon filter today!

    Universal Filter Sizing

    The 20 X 4.5 Tier1 EPM4-20BB carbon block replacement filter 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 this size filter. The EPM4-20BB goes to work immediately providing cleaner, fresher water for up to six months or 30,000 gallons, depending on water quality and use. Enjoy cleaner better water with your whole house replacement filter today.

    TIER1-EPM4-20BB   is comparable with the following part number(s)

    • EPM4-20BB
    • AMETEK-155783
    • EPM-20BB