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Replacement filter package for this system is Amazon item B0110LUKR0 1st Stage: 20 Micron Sediment Filter. For particles such as sand, dirt, silt, and rust. To remove these particles it allows a better performance for the following Carbon Block filter. 2nd Stage: 5 Micron Carbon Block Filter. Removes chlorine, bad taste and odor, organic solvents and organic chemicals that contribute to bad taste and odor.
(4 Pack) 20" x 4.5" BB Whole House CTO and String Wound Filter Replacement Works with 20" BB Whole House Water Systems
$94.95 ($23.74 / Count) (as of May 2, 2024 11:04 GMT +00:00 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)String-Wound Sediment Filter. CTO Filter Universal Size - 20” x 4.5” filter size fits all BB 20” filter housings All Filters are Individually Wrapped Model: 104350x2~104114x2