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Replacement for Model Bosch 500

Filtersfast FF21230 Replacement for WSB-1


Filtersfast FF21230 Replacement for WSB-1
$14.99 /ea
Retail: $20.99 /ea
You Save: 29%
As low as
Retail: $20.99
You Save: 29%

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Product Information

The Filters Fast FF21230 is the compatible replacement filter for the Water Sentinel WSB-1. The FF21230 offers an effective filtration replacement for the Whirlpool WHCF-IMTOS and WHCF-IMPLUS inline systems and is designed to reduce chlorine taste and odor, sediment, lead, mercury, and other impurities from your drinking water.

Filter Specifications:

  • Part Number: FF21230
  • Replaces Part Number: WSB-1
  • Micron Rating: 5
  • Dimensions: 8-1/8"x2-3/16"
  • Filter Media: Activated Carbon
  • Flow Rate: 0.5 gpm
  • Capacity: 1,500 gallons; 6 months
  • Operating Pressure: 25 - 120 psi
  • Operating Temperature: 40-100 F
  • NSF Certified for Standard: 42

The FF21230 reduces:

  • Chlorine Taste and Odor
  • Sediment
  • Does not reduce beneficial minerals and fluoride

The FF21230 is Compatible With the Following Filters:


  • WHKF-R-Plus
  • 56932
  • W1085590

3M/ Cuno

  • CS-52, CS-522, CS-532, CS-512, CS-562, CS52, CS-51, CS-450, CS-452
  • OCS
  • 55866-05, 55866-06
  • 700200002518


  • 640565
  • AP3961137
  • 1257074
  • CS-52

Water Sentinel

  • WSB-1
  • WSQ-1
  • WSQB-1


Filtersfast FF21230 Replacement for WSB-1 Product Reviews :

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WSB-1 is used in the following Models
Water Sentinel
 Bosch AP3961137
Water Sentinel
 Bosch CS-52
Water Sentinel
 Bosch 500
Water Sentinel
 Bosch 800
Water Sentinel
Water Sentinel
 Bosch 640565
Water Sentinel
 Bosch 1257074
Water Sentinel
 3M CS-52
" Happy with my item, the price, and the fast delivery of my filters! " - Sam, Atlanta, GA
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