

Culligan US-600A Under Sink Drinking Water Filter System - Includes D-20A Filter Cartridge
Key item features
- Under-Sink Filtration: This system improves the taste and quality of drinking water directly from your existing kitchen faucet, fitting compactly under the sink.
- Effective Filtration: The included D-20A filter cartridge effectively reduces bad taste, odor, and chlorine for cleaner, fresher-tasting water.
- Slim Design: The unit features a slim-line design that taps directly into the cold-water line, optimizing under-sink space.
- Cartridge Compatibility: Designed for use with various Culligan under-sink cartridges, including D-10A, D-20A, D-30A, and D-40A.
- Complete Installation: Includes a filter head with built-in bracket, white filter housing, mounting hardware, D-20A cartridge, housing wrench, 3/8-inch plastic tubing, and quick-connect fittings.
- Extended Filter Life: The D-20A basic filter cartridge provides filtered water for up to 1,000 gallons or 12 months, depending on water quality.
Specs
- Filtration stages2
- Water contaminants removedChlorine
- Height4.75 in
- Weight2.88 lb
Reviews summary
- : Water tastes clean and free of impurities.
- : Does not work with certain types of fittings, requiring additional purchases.
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About this item
Product details
The Culligan US-600A Drinking Water Filter System fits compactly under the kitchen sink and taps directly into the cold-water line for convenient access to filtered water from your existing kitchen faucet. The unit installs easily on a 3/8-inch cold-water line using quick connect fittings and is designed with an integrated mounting bracket for ease of installation. Plastic tubing and all installation hardware included. The D-20A cartridge (12-month filter life) reduces bad taste, odor, and chlorine taste and odor to deliver the freshest tasting water. The US-600A is also designed for use with Culligan filter cartridges D-10A, D-30A (advanced filtration), and D-40A (premium filtration). Culligan makes getting cleaner water safe, easy, and convenient. With whole home filters, under-sink filters, shower filters and more, we have all your water filtration needs covered. Visit our website to schedule your free water test or an appointment with your local Culligan water expert.
- UNDER SINK WATER FILTER: Culligan US-600A Drinking Water Filter System improves the taste and quality of drinking water from your existing kitchen faucet.
- FRESHER TASTING WATER: D-20A filter cartridge included effectively filters bad taste, odor, and chlorine to deliver clean, fresh tasting drinking water.
- SLIM-LINE DESIGN: Fits under the kitchen sink and taps directly into the cold-water line.
- DESIGNED FOR USE WITH CULLIGAN UNDER SINK CARTRIDGES: For use with Culligan drinking water cartridges, including D-10A, D-20A, D-30A and D-40A. (D-30A and D-40A require separate dedicated faucet installation due to flow restrictions.)
- IAPMO R & T TESTED AND CERTIFIED: Filter housing comes with 5-year limited warranty.
- COMPLETE WITH ALL YOU NEED: Includes filter head with built-in bracket, white filter housing, mounting hardware, D-20A cartridge, SW-5A housing wrench, 3/8-inch plastic tubing, quick-connect fittings, installation instructions.
- FILTER LIFE: D-20A basic filter cartridge included lasts up to 1,000 gallons or 12 months, depending on water quality.
- TRY OUR FULL LINE OF PRODUCTS: Look for all Culligan whole house, shower, and drinking water solutions. Culligan has all your water filtration needs covered, providing cleaner, healthier, safer water for your home.
Specifications
Filtration stages
Water contaminants removed
Height
Weight
Warranty
Warranty information
Please be aware that the warranty terms on items offered for sale by third party Marketplace sellers may differ from those displayed in this section (if any). To confirm warranty terms on an item offered for sale by a third party Marketplace seller, please use the 'Contact seller' feature on the third party Marketplace seller's information page and request the item's warranty terms prior to purchase.
Warnings
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Customer ratings & reviews
Reviews summary
- : Water tastes clean and free of impurities.
- : Does not work with certain types of fittings, requiring additional purchases.
Showing 1-3 of 22 reviews
Verified Purchase
Great product at a great price.
I put this one in for a friend but i have own the same one for years and it does a great job. I have a water tester and it greatly improves the water but the clarity and taste says it all. We love it.
Verified Purchase
I love this! My water tastes so clean. It was so easy to install. A lot easier to use then my Put her water purifier
Verified Purchase
Easy to Filter Cartridge Upgrade
This under sink water filter system is well constructed and easy to install. I also upgraded it with a Culligan D-40A filter cartridge to filter out 99% of heavy metals like lead and mercury.








