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OmniFilter GAC1 Undersink Carbon Water Filter


Retail: $19.99 /ea
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Retail: $19.99
You Save: 15%
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The OmniFilter GAC1 Undersink Carbon Water Filter (Series C) is a replacement undersink water filter for the OmniFilter SFM2 and other OmniFilter water filter systems. This OmniFilter water filter has a 20 micron rating and replaces model numbers GAC1-SS and GAC1-DS. This powerful water filter reduces sediment and rust particles, as well as 97.5% of chlorine taste and odor.

Filter Specifications:

  • Micron Rating: 20
  • Flow Rate: 1 GPM
  • Filter Life: 2,000 or 12 months
  • Dimensions: 9 3/4" x2" (10" water filter)
  • Granular activated carbon (GAC) cartridge
  • Reduces sediment, rust particles, and chlorine

This carbon filter was previously known as model number GAC1-SS6-01 and/or GAC1-SS6-05 and is now known by model number GAC1-SS4-05.

The OmniFilter GAC1-SS can be used in place of the Omnifilter CB3 Series A and is the correct replacement water filter for the following filtration systems:


  • SFM2
  • OB3
  • UC2
  • U400
  • U500
  • U600
  • U700
  • OT2
  • Omni Super
  • Omni Deluxe
  • Omni Total 2
  • Omni Total Plus

Compatible Parts:

The OmniFilter GAC1 Undersink Carbon Water Filter is the correct replacement for the following part numbers:

Part Number
OmniFilter Gac1-ss4-s06
OmniFilter GAC1-SS4-S18
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Compatible Models:

The OmniFilter GAC1 Undersink Carbon Water Filter is correct replacement for the following model numbers:

BrandModel NumberDescription
OmniFilterOmni DeluxeUnder Sink Filters
OmniFilterOmni SuperUnder Sink Filters
OmniFilterOmni Total 2Under Sink Filters
OmniFilterOmni Total PlusUnder Sink Filters
OmniFilterOmniFilter OB3Under Sink Filters
OmniFilterOmniFilter OT2Under Sink Filters
OmniFilterOmniFilter SFM2Under Sink Filters
OmniFilterOmniFilter U400Under Sink Filters
OmniFilterOmniFilter U500Under Sink Filters
OmniFilterOmniFilter U600Under Sink Filters
OmniFilterOmniFilter U700Under Sink Filters
OmniFilterOmniFilter UC2Under Sink Filters
No results for {X}


Customer Reviews:

Total Reviews: 7 | Average Rating: 4.5 / 5.0

Linda Messina2022-07-18

The filter was listed on your website as a suitable replacement for a discontinued item. It is not sized correctly and does not fit the system as stated. Waste of time and money.

Collected by
Jamey Bontrager-Singer2022-06-26

Good quality

Collected by

Perfect for my old but reliable filter.

Collected by
Gary Moore2021-03-27

Great quality- cant send photos installed them same day they came

Collected by

I have a problem swallowing regular tap water. It causes me to choke. I can drink an entire glass of water with your filter and not have the pain or choking. The only problem I've been having is being able to find them in the stores in our area. We used to be able to purchase them at Walmart. Thank you for such a wonderful product that works.

Collected by

These are fantastic. We have drops that we put into a glass of water that tells us how much chlorine is in the water. We tested our water and it was yellow with chlorine. With the new filter. the water is crystal clear. We have been useing these filters for a few years and won't even consider another brand.

Collected by
robert reed2009-02-07

iuse one on my icemaker in the refrigerator door . i am very satisfied with the filter, and your price and service

Collected by

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