















💧 Elevate your home water game — pure, powerful, and built to last!
The PUREPLUS RFN20BB is a 5-micron whole house water filter cartridge engineered to drastically reduce iron and manganese levels from domestic water supplies, improving taste and safety. Manufactured under rigorous ISO9001 standards and tested for durability, it offers a 6-month or 4,000-gallon lifespan with reusable resin granules that can be refreshed via saltwater soaking. Compatible with PUREPLUS 20"x4.5" filtration systems, it delivers professional-grade filtration for healthier water throughout your home.


| ASIN | B09JW38NFD |
| Best Sellers Rank | #27,766 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #224 in Replacement Under-Sink Water Filters |
| Brand | PUREPLUS |
| Customer Reviews | 4.6 4.6 out of 5 stars (230) |
| Date First Available | October 20, 2021 |
| External Testing Certification | IAPMO |
| Item Weight | 7.41 pounds |
| Item model number | RFN20BB |
| Manufacture Year | 2023 |
| Manufacturer | PUREPLUS |
| Material | Resins |
| Number of Items | 1 |
| Product Benefits | Removes Iron & Manganese, Improves Water Quality, Protects from Heavy Metal Pollution |
| Product Dimensions | 4.5"D x 4.5"W x 20"H |
| Set Name | Whole House |
| Unit Count | 1.0 Count |
A**M
Water taste much better
Use this as a replacement for my Watts whole house filtration system. It is working well and our water taste better than a different type of filter I tried. So far so good and will definitely purchase again if it holds up.
D**L
Good replacement for OEM
Good quality filters for home use. Easy to change out.
M**I
Water filter
Perfect fit at a reasonable price
P**E
Great filter
This filter does a magnificent job of cleaning the water! I just hope it lasts as long as the last one we installed (different number).
C**S
Quedó muy bien
R**N
Going back to Pentek.
Really decent company to deal with, I had a little issue, and it was corrected immediately. Great customer service, super fast service.
A**N
Solid fit and construction. Hope it takes the metals out
This filter is heavy duty so assume it works but haven’t tested the water. I have a Viqua 20” water canister and fits well. Just make sure you remove the old washers from old filter and ensure this filter’s washers are properly fitted. I would buy if you’re concerned with metals.
F**S
Charcoal filter working for my needs.
Carbon filter seems to be working for my needs as we have city water but with very high levels of chlorine. The first filter came broken so returned and repurchased. I am hoping that will last a while (6 months+) as these are not cheap. It is my 3rd stage filter with a 50 micron first, seconds a 5 micron and this one being the last one. I am providing a picture of the before and after installation as all my spoons and utensils looked horrible and needed to be rewashed and dried right away.
J**U
Just exactly what I needed for my well water
J**I
i bought this product, i didn't need to use until my old filters needed changing. When i opened it to replace filter, it fell into 2 pieces as photos provided. it was always in a safe box in the garage so it must have happened in transit or at the manufacturers. i just want it replaced
C**.
Good
Trustpilot
1 day ago
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