FloPlus-20BB 455906-43 Filters Fast FFC-20BB-FLO Replacement for Pentair FLOPLUS-20BB Water Filter Cartridge
This Pentair FloPlus-20BB 455906-43 Filter is a 20 inch Big Blue Carbon Block water filter for use in many water filter systems, especially whole house filter systems. The Pentair 455906-43 is a Big Blue filter (4 1/2" diameter) that features a much higher flow rate in gallons per minute than standard diameter filters (2 1/2" ). The Pentair FloPlus-20BB is specially made for high flow whole house applications where a low pressure drop is needed. This advanced Pentair filter replacement cartridge is specifically made to reduce the bad taste and odor of chlorine and other chemicals in water. It also removes or reduces sediment, dirt, rust, and other common impurities. This filter also removes 99.95% of cysts such as cryptosporidium and giardia. This Pentair FloPlus-20BB water filter is also known by Pentair part number 455906-43. This filter has been tested and certified by NSF International to NSF / ANSI Standard 53 for the reduction of cysts.
Note: This cartridge should be flushed for about five minutes before using the water in order to remove all carbon fines.
Specifications:
- Brand: Pentair
- Model Number: FloPlus-20BB
- Part Number: 455906-43
- Replaces Part Number: WFP-20BBa
- Pack Size: 1
- Dimensions: 20" length x 4 1/2" diameter
- Flow Rate: 4-5 GPM depending on specific filter system
- Filter Life: 6 months or 50,000 gallons depending on usage and water quality
- Filter Media: Carbon block
- Initial Pressure Drop: 4 PSID
- Micron Rating: 0.5 micron
- Temp. Range: 40 - 180° F
- Connection: Drop in
Compatible Parts:
The Pentair FloPlus-20BB is the correct replacement for the following part numbers:
Compatible Models:
The Pentair FloPlus-20BB is correct replacement for the following model numbers:

Customer Reviews:

Good quality and easy to install
Collected by Trustpilot.comThis filter on a water well system in Texas with hard water just works as defined extremely well. The pressure loss was only two pounds (PSI). Also, the Tech. at FilterFast explained that a UV light may not be necessary and after water tests, she was correct. This makes my third one, changed every six months. Highly recommend.
Collected by FiltersFast.comProduct Availability
Please provide your e-mail address below to receive a notification when this product becomes available:
XThanks! We'll send you a notification when this product is available!