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Pentek FloPlus-20BB - 20" x 4.5" Big Blue Carbon Block - Cyst 0.5 Micron Filter

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Pentek FloPlus-20BB - 20" x 4.5" Big Blue Carbon Block - Cyst 0.5 Micron Filter

The Pentek FloPlus-20BB is a 20" x 4.5" carbon block filter cartridge engineered to reduce sediment, chlorine taste and odor, and protozoan cysts down to 0.5 micron with 99.95% cyst reduction efficiency. With a 50,000-gallon chlorine reduction capacity at 4 gpm and NSF/ANSI 53 certification, this Big Blue cartridge delivers whole-house filtration performance with the dirt-holding capacity of a 10-micron filter.
SPECIFICATIONS

Core Performance Data

Filtration Rating
0.5 Micron
Nominal (85% efficiency)
Cyst Reduction
99.95%
NSF/ANSI 53 certified
Chlorine Capacity
50,000 Gal
At 4 gpm, 90% reduction
Flow Rate
4 GPM
4 psi initial pressure drop
Dimensions
20" x 4.5"
Fits Big Blue housings
Temperature Range
40–180°F
4.4–82.2°C operating range
TECHNICAL DETAILS

Construction & Materials

Filter Media Modified bonded powdered activated carbon (PAC)
Gasket Material Santoprene (TPE, thermoplastic elastomer)
Exact Dimensions 20" x 4-5/8" (508 x 118 mm)
Cysts Reduced Giardia, Entamoeba, Cryptosporidium, Toxoplasma
Chlorine Spec Reduces FAC at 2 ppm by 90% minimum
Certification NSF/ANSI Standard 53 for cyst reduction
Manufacturer Pentair (ISO 9001 & 14001 certified)
COMPATIBILITY & APPLICATIONS

Designed for Whole-House & Commercial Use

The FloPlus-20BB is designed for standard 20-inch Big Blue filter housings (sold separately) and is ideal for whole-house water filtration, commercial drinking water applications, and point-of-entry systems requiring high-capacity chlorine and cyst reduction. The modified bonded carbon block construction provides the flow rate and dirt-holding capacity comparable to a 10-micron sediment filter while maintaining sub-micron filtration efficiency. This cartridge is particularly effective in municipal water systems where chlorine taste and odor removal is needed alongside protection against protozoan cysts. Santoprene gaskets ensure a reliable seal in both residential and light commercial installations.

💧 Pro Tip: The FloPlus series uses a unique modified carbon formulation that resists channeling and maintains flow rate longer than standard carbon blocks. Replace every 12 months or when flow rate drops noticeably, whichever comes first, even if you haven't reached the 50,000-gallon capacity.
The Pentek FloPlus-20BB is a 20" x 4.5" carbon block filter cartridge engineered to reduce sediment, chlorine taste and odor, and protozoan cysts down to 0.5 micron with 99.95% cyst reduction efficiency. With a 50,000-gallon chlorine reduction capacity at 4 gpm and NSF/ANSI 53 certification, this Big Blue cartridge delivers whole-house filtration performance with the dirt-holding capacity of a 10-micron filter.
SPECIFICATIONS

Core Performance Data

Filtration Rating
0.5 Micron
Nominal (85% efficiency)
Cyst Reduction
99.95%
NSF/ANSI 53 certified
Chlorine Capacity
50,000 Gal
At 4 gpm, 90% reduction
Flow Rate
4 GPM
4 psi initial pressure drop
Dimensions
20" x 4.5"
Fits Big Blue housings
Temperature Range
40–180°F
4.4–82.2°C operating range
TECHNICAL DETAILS

Construction & Materials

Filter Media Modified bonded powdered activated carbon (PAC)
Gasket Material Santoprene (TPE, thermoplastic elastomer)
Exact Dimensions 20" x 4-5/8" (508 x 118 mm)
Cysts Reduced Giardia, Entamoeba, Cryptosporidium, Toxoplasma
Chlorine Spec Reduces FAC at 2 ppm by 90% minimum
Certification NSF/ANSI Standard 53 for cyst reduction
Manufacturer Pentair (ISO 9001 & 14001 certified)
COMPATIBILITY & APPLICATIONS

Designed for Whole-House & Commercial Use

The FloPlus-20BB is designed for standard 20-inch Big Blue filter housings (sold separately) and is ideal for whole-house water filtration, commercial drinking water applications, and point-of-entry systems requiring high-capacity chlorine and cyst reduction. The modified bonded carbon block construction provides the flow rate and dirt-holding capacity comparable to a 10-micron sediment filter while maintaining sub-micron filtration efficiency. This cartridge is particularly effective in municipal water systems where chlorine taste and odor removal is needed alongside protection against protozoan cysts. Santoprene gaskets ensure a reliable seal in both residential and light commercial installations.

💧 Pro Tip: The FloPlus series uses a unique modified carbon formulation that resists channeling and maintains flow rate longer than standard carbon blocks. Replace every 12 months or when flow rate drops noticeably, whichever comes first, even if you haven't reached the 50,000-gallon capacity.
$59.15

Original: $169.00

-65%
Pentek FloPlus-20BB - 20" x 4.5" Big Blue Carbon Block - Cyst 0.5 Micron Filter—

$169.00

$59.15

Description

The Pentek FloPlus-20BB is a 20" x 4.5" carbon block filter cartridge engineered to reduce sediment, chlorine taste and odor, and protozoan cysts down to 0.5 micron with 99.95% cyst reduction efficiency. With a 50,000-gallon chlorine reduction capacity at 4 gpm and NSF/ANSI 53 certification, this Big Blue cartridge delivers whole-house filtration performance with the dirt-holding capacity of a 10-micron filter.
SPECIFICATIONS

Core Performance Data

Filtration Rating
0.5 Micron
Nominal (85% efficiency)
Cyst Reduction
99.95%
NSF/ANSI 53 certified
Chlorine Capacity
50,000 Gal
At 4 gpm, 90% reduction
Flow Rate
4 GPM
4 psi initial pressure drop
Dimensions
20" x 4.5"
Fits Big Blue housings
Temperature Range
40–180°F
4.4–82.2°C operating range
TECHNICAL DETAILS

Construction & Materials

Filter Media Modified bonded powdered activated carbon (PAC)
Gasket Material Santoprene (TPE, thermoplastic elastomer)
Exact Dimensions 20" x 4-5/8" (508 x 118 mm)
Cysts Reduced Giardia, Entamoeba, Cryptosporidium, Toxoplasma
Chlorine Spec Reduces FAC at 2 ppm by 90% minimum
Certification NSF/ANSI Standard 53 for cyst reduction
Manufacturer Pentair (ISO 9001 & 14001 certified)
COMPATIBILITY & APPLICATIONS

Designed for Whole-House & Commercial Use

The FloPlus-20BB is designed for standard 20-inch Big Blue filter housings (sold separately) and is ideal for whole-house water filtration, commercial drinking water applications, and point-of-entry systems requiring high-capacity chlorine and cyst reduction. The modified bonded carbon block construction provides the flow rate and dirt-holding capacity comparable to a 10-micron sediment filter while maintaining sub-micron filtration efficiency. This cartridge is particularly effective in municipal water systems where chlorine taste and odor removal is needed alongside protection against protozoan cysts. Santoprene gaskets ensure a reliable seal in both residential and light commercial installations.

💧 Pro Tip: The FloPlus series uses a unique modified carbon formulation that resists channeling and maintains flow rate longer than standard carbon blocks. Replace every 12 months or when flow rate drops noticeably, whichever comes first, even if you haven't reached the 50,000-gallon capacity.
Pentek FloPlus-20BB - 20" x 4.5" Big Blue Carbon Block - Cyst 0.5 Micron Filter | Isopure Water