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Cartridge Alternate CB3 - California Certified and for Older OT32 Units
The Alternate CB3C is the highest performance carbon block cartridge on the market today. It is used in OMNI Undersink filters CBF3, OT32, and OB3. The CB3's carbon block removes chlorine and odors, harmful bacteria like Giardia and Cryptosporidium, lead, and volatile organic compounds (VOCs) like Atrazine (a herbicide) and Lindane (a pesticide), as well as 32 other VOCs, to give you great tasting, safe drinking water right from the tap, or from a dedicated faucet, depending on the unit selected.

This cartridge is the Certified Cartridge per California Law
CB3C Alternate for California Residents.  

Need Help? Please call our customer service number: (855) 855-1976 for assistance. 
Change cartridge filter every 4 months.  CB3 Replacement Instructions
CB3  Cartridge - For CBF3, CBF3 Series A and for CBF3 Series B
and the OT32, OT32 Series A, and OT32 Series B Filter units

K4 O-Ring* - For CBF3, CBF3 Series B,  OT32 & OT32 Series B

OW1 Tank Wrench - For CBF3 & OT32

OW30 Tank Wrench - For CBF3 Series B & OT32 Series B

NOTE: California Residents & Anyone with an Older Unit using a CB3
Due to California Law, we are unable to sell you the current, new Omnifilter CB3 - V2.87.  We found a compatible California Certified Cartridge and will send that to CA residents instead.   Order the Larger, New CB3 V2.87 Directly Here.   OR USE THE CB1 Cartridge 

ALSO NOTE: The New CB3 - V2.87 is larger than the old CB3 - V2.72
Our Alternate CB3 - V2.72 Cartridge has a slightly smaller diameter than the new CB3 and it will fit your older OT32 and the other older OmniFilter Units.  Order the Alternate Larger CB3 - V2.87 here - if you have a Newer unit.



& Smaller, Alternate Cartridge
For California Residents

CB3 Replacement Cartridges

CB3C Alternate Pricing 
QTY 1 at $39.94 each  
QTY 2-5 at $37.04 each 
QTY 6+ at $33.15 each 

  CB3C for California Residents  $39.94
   CB3A the Original Size Cartridge for Older Units.  

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** We recommend using fresh
Lubricant with every
cartridge change
and every o-ring change.


Help - What Oring do I need?

plumbing fittings

  K4 O-ring + $3.95

 O-Ring Lubricant $.49
** Adding Lubricant.

(if selected above)



- Help - 
What wrench do I need?

  Universal Strap Wrench 
+ $19.99 (fits all Omni filters)

  OW1 Wrench + $19.99
(Strap Wrench fits all Omni filters)

  OW30 Wrench + $7.99

(if selected above)



Model CB3
Filter type Carbon Block
Reduces: Rust & Sediment (Class I)
  Odor & Chlorine (98%)
  Lead (97%) Mercury, Asbestos
  Cryptosporidium & Giardia Cysts (99.99%)
  VOCs (97-99%) - Including Atrazine & Lindane   MTBE 
Benefits Reduces lead, Cryptosporidium and Giardia cysts, and 34 VOCs at 97% or better. Also removes chlorine and odors to give you great tasting water.
Average Cartridge Life 1 400 gal
Flow Rate2 0.5 gpm
Micron Rating 3 0.5

1 Usage and the quality of water in your incoming line determine when your cartridge should be changed.
2 Gallons per minute.
3 The smaller the micron, the finer the filtration.


Click On Links For Tank Wrench and Replacement O-Rings Information

Installation Information

If you have an older Omni filter model that has been discontinued and need an O-Ring, please call our customer service number: (855) 855-1976 for assistance.


The CB3 filter cartridge replaces the TC3 or TC 3 filter cartridge.

Also called CB3 or CB 3 filter cartridge.

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NOTE: as of 2008, the design of the CB3 has changed again. The CB3 will now be open at both ends. Another major difference is that this newer version will last longer (up to 6 months).

If you receive a new model and you are unable to close the top of your housing, please remove the o-ring(s) from the new filter and use the ones from the old filter, as the new ones may be thicker. This should allow you to close the lid on the housing.




Call Us toll free (855) 855-1976

E-mail info@envirotechproducts.com

We are not associated with Envirotech Products Incorporated of Mulvane Kansas          02242014