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Iron and Manganese Reducing Replacement Water Filter by Tier1

Price $48.99 List Price Price $69.99 Save 30%
Availability: In Stock - Free Shipping
Fits 20 x 4.5 inch Big Blue filter housings
  • Efficiently reduces Iron and Manganese levels to 0.01 ppm
  • Most effective in water with no more than 3 ppm Iron
  • Fits standard sized housings which require a 20 x 4.5 inch filter
  • Long filter life of 45,000 gallons or up to 6 months
See more product details
The iron and manganese reducing replacement water filter by Tier1 utilize cation exchange resin to remove minerals such as iron and manganese from your water. Cation exchange resin exchanges ions with the minerals in water to capture and reduce contaminants. In a softener this process can be repeated for longer stretches of time since the resin beads will be regenerated, however with a replacement cartridge like this, you won't have to worry about replacing salt or wasteful backwash cycles to regenerate the resin. This can be seen as a preferable economic trade-off depending on your needs and demand. Let Tier1 be your water experts and protect every drop.

NOTE: It is recommended that a sediment pre-filter be installed to help extend the life of the iron and manganese reducing filter.

Experience the Tier1 Difference

Tier1 manufactures high-quality filtration and household products. We take creating and maintaining a healthy home seriously. Products must undergo rigorous testing and meet demanding quality expectations in order to earn the Tier1 badge. Every purchase is backed by the Tier1® Guarantee:

  • Guaranteed Fit
  • Guaranteed Quality
  • Guaranteed Price
Package Qty1
Used In BrandsTier1
Manufacturer's IdMANG-IRON
Advertised Size (in)20 x 4-1/2
Actual Size (in)20 inches (length) x 4.5 inches (width) x 4.5 inches (height)
MediaCation Exchange Resin
Filter Life (gallons)45,000
Filter Life (months)6 months
Operating Pressure (psi)20 - 100
Operating Temperature (°F)40 - 120
Flow Rate (gpm)4.5
Warranty GuaranteeTier1® Protect Every Drop Guarantee
Primary Filter MediaIon Exchange Resin

Reduced Contaminants

The TIER1-MANG-IRON reduces the following contaminants:

  • Iron
  • Manganese
  • Oxidized Iron
  • Oxidized Manganese


  1. Turn off the water supply. Press the 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. Insert the new filter cartridge.
  7. Screw housing onto the cap and hand-tighten. Do not overtighten. Make sure cap standpipe slips into cartridge.
  8. Turn on the water supply. Press the pressure-relief button (if present). Check for leaks before leaving installation.