FLOPLUS-20BB Pentek Replacement Filter Cartridge - Whole House Cartridges - 133.34 - DiscountFilterStore.com

PENTEK-FLOPLUS-20BB

FLOPLUS-20BB Pentek Replacement Filter Cartridge

Name: FLOPLUS-20BB Pentek Replacement Filter Cartridge
Brand: Pentek
SKU: PENTEK-FLOPLUS-20BB
Price: 142.33 USD
Availability: InStock
Rating: 4.8 (6 reviews)

High Stock (22)

$142.33

Price Per Item
Single	$142.33
2 PACK	$140.91
4 PACK	$139.48
6 PACK	$138.06
24 PACK	$125.25

Fits most Big Blue housings that accept 20-inch x 4.5-inch water filter cartridges

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Product cannot ship to California, Iowa, or Wisconsin
Revolutionary new technology that significantly enhances the traditional Fibredyne
Dirt-holding ability of a 10-micron carbon block with the particulate efficiency of a 0.5-micron cartridge
High flow and low pressure drop, with the advantage of infrequent cartridge changes

Features & Specs

Package Qty: 1

Manufacturer: Pentair Water

Manufacturer's Id: FLOPLUS-20BB

UPC: 051678014622

Actual Size (in): 20 inches (length) x 4 5/8 inches (outside diameter)

Media: Bonded Powder-Activated Carbon

Primary Filter Media: Activated Carbon Block

Operating Temperature (°F): 40 - 180

Operating Temperature (°C): 4.4 - 82.2

Brand: Pentek

Advertised Size: 20 x 4-1/2

Length (in): 20 in

Outside Diameter (in): 4.63 in

Width (in): 4.63 in

Materials of Construction: End Caps: Polypropylene, Netting: Polyethylene, Gasket: Santoprene

Media Type: Carbon Filter

Micron Rating Nominal: 0⋅5

Flow Rate (gpm): 4.0

Includes: One 20 x 4.5 Inch Pentek FLOPLUS-20BB High Flow Carbon Water Filter

Instructions

Turn off water supply. Press red pressure-relief button (if present).
Unscrew housing. Remove large o-ring, wipe clean and set aside.
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.
Lubricate o-ring with clean silicone grease. Change o-ring if any damage cuts or degradation are present. Insert o-ring in groove.
NOTE: This step is important to ensure a proper housing seal. Make certain the o-ring is seated level in the groove.
Insert new filter cartridge.
Screw housing onto the cap and hand-tighten. Do not over tighten. Make sure cap standpipe slips into cartridge.
Turn on water supply. Press pressure-relief button (if present). Check for leaks before leaving installation.

Downloads

User Guide

Certifications

NSF/ANSI Standard 53

Contaminants Reduced

Chlorine Taste & Odor

Cryptosporidium

Cysts

Giardia

Filter Life

Filter Life (gallons): 50,000

Filter Life (months): 6 months

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

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Frequently Asked Questions

What is the micron rating of the Pentek FloPlus-20BB filter cartridge?

The Pentek FloPlus-20BB is a high-performance carbon block cartridge with a 0.5-micron nominal rating. This ultra-fine filtration capability allows it to reduce cysts such as Cryptosporidium and Giardia, along with chlorine taste and odor, sediment, and fine particulates. Its 20" x 4.5" Big Blue size makes it ideal for whole-house systems that demand both high flow rates and superior filtration performance.

Is the Pentek FloPlus-20BB NSF/ANSI certified?

Yes, the Pentek FloPlus-20BB is tested and certified by NSF International against NSF/ANSI Standard 42 for chlorine taste and odor reduction, and NSF/ANSI Standard 53 for cyst reduction (Cryptosporidium and Giardia). These certifications verify the cartridge's performance claims and ensure it meets strict industry standards for material safety and contaminant reduction.

What is the filtration life and flow rate of the FloPlus-20BB cartridge?

The Pentek FloPlus-20BB has a rated service life of approximately 20,000 gallons or 6 to 12 months, depending on water quality and usage. It supports a high flow rate of up to 8 GPM (gallons per minute) with a maximum operating temperature of 100°F (37.8°C) and a pressure range of 40-125 psi, making it suitable for demanding whole-house applications.

What housings is the Pentek FloPlus-20BB compatible with?

The FloPlus-20BB is designed to fit standard 20-inch Big Blue (BB) filter housings with a 4.5-inch diameter, including Pentek Big Blue housings and compatible 20" BB housings from other manufacturers. Its double open-end (DOE) configuration with standard gasket seals ensures a proper fit for reliable, leak-free operation in point-of-entry whole-house filtration systems.

How does the FloPlus-20BB differ from standard carbon block cartridges?

Unlike standard carbon block filters, the Pentek FloPlus-20BB uses a proprietary extruded carbon block technology that delivers 0.5-micron cyst reduction while maintaining exceptionally high flow rates and low pressure drop. This unique design combines premium chlorine and cyst reduction with the capacity needed for whole-house use, offering superior performance compared to conventional CTO or GAC cartridges of similar size.

	FLOPLUS-20BB Pentek Replacement Filter CartridgeFrom $142.33	CBC-20BB Pentek Replacement Filter Cartridge by Tier1From $32.56	USWF Coconut Carbon Block Filter 0.5 Micron 20"x4.5"From $104.94
Product Price	$142.33	$32.56	$104.94
Product SKU	PENTEK-FLOPLUS-20BB	TIER1-CBC-20BB	USWF-CB05-2045
Filter Life (months)	6 months	6 months	6 months
Primary Filter Media	Activated Carbon Block	Activated Carbon Block	Activated Carbon Block
Micron Rating (Nominal)	0⋅5	0⋅5	0⋅5
Actual Size (in)	20 inches (length) x 4 5/8 inches (outside diameter)	19 3/4 inches (length) x 4 1/2 inches (outside diameter)	20 inches (length) x 4 1/2 inches (outside diameter)
Country of Manufacture	—	—	United States

FLOPLUS-20BB Pentek Replacement Filter Cartridge

Frequently Asked Questions

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