Two Pack of Authentic Sub-Zero Factory Certified Water Filters

4204490 Replacement Water Filter Fits Built-In, PRO48, and Integrated Refrigerators

Genuine OEM Part from the Sub-Zero factory in Madison, WI. Made in the U.S.A.

Ensures your Sub-Zero serves the highest quality water and ice for one year

Meets or exceeds NSF/ANSI Standards 42 and 53

Crystala Replacement for 4204490 Filter Statement: After our laboratory test, the 4204490 refrigerator water filter removes 97.9% chlorine and improves the water’s smell and taste.

Maintain all necessary micronutrients: After testing in our laboratory, the CF24 Refrigerator Water Filter removed 97.9% of the chlorine and improved the smell and taste of the water.

Compatible with Sub-Zero Refrigerator Water Filter: 4204490, 4290510, PRO 48, PRO 48 with glass door, BI-36F freezer, BI-36U up and down refrigerator/freezer, BI-48S side-by-side refrigerator/freezer, BI-48SD side-by-side Refrigerator/freezer, BI-36UG glass door refrigerator/freezer, BI-30U up and down refrigerator/freezer, BI-30UG glass door refrigerator/freezer, BI-42S side-by-side refrigerator/freezer, BI-42SD side-by-side refrigerator/freezer.

Twist-lock design, leak-proof fit: The water filter replacement 4204490 features a twisted design for a quick and easy filter change. Leakproof fit, free of tools. (Note: Please contact us if you encounter any problems during installation).

Filter life: For optimum filtration, replace the water filter cartridge every six months or 200 gallons (depending on your actual water usage) and periodically replace the water filter for higher quality water and ice.

Enhance the purity of drinking water: timely replacement of the water filter effectively filters large particles of impurities in the water such as sediment, rust, etc., ensuring clean drinking water.

Enhance the filtration precision: the adapted filter element is designed for different water quality, effectively intercepting heavy metals, suspended solids and other small particles.

Protect refrigeration system: The filtered water quality reduces scale generation, avoiding the condenser and evaporator from scaling and affecting the refrigeration efficiency.

Safeguard the whole family's drinking water safety: By continuously replacing the water filter, the family members are provided with clean water that meets the drinking standard.

Compatible with Sub-Zero, 4204490 Refrigerator Water Filter For 4290510, F1000 Fits Built-In, PRO48, and Integrated Refrigerators

Authoritative Certifications]:The filter has been certified by NSF against NSF/ANSI 42 and 372 standards, effectively reducing chlorine content. Activated carbon block and other advanced filter media ensure efficient and safe filtration.

Replacement for Sub-Zero 4204490,4290510, F-1000,F-2000, F-3000, WCF110-L, Compatible with F-1000S & F-2000S & F-3000S Filtration System, AquaPure AP Easy C-Complete. Subzero Water Filter Replacement, providing you with high-quality water and making drinking safer.

Water filter F-1000 is easy to install requiring no tools. For detailed instruction, please kindly refer to the Instruction Manual in the box.

To prolong the life of your appliance and achieve optimum performance, we recommend you to replace the F-1000 filter every 6 months or 500 gallons, whichever comes first and will vary based on water conditions.

Cost-effective choice helps you save money and enjoy fresh water.Connected with the cold water valve only! This filter does not reduce TDS！

After advanced upgrade, the model number is changed from AQU-F-1000 into AQU-WF03-F1. Our premium coconut carbon block filter is tested by independent laboratory against NSF/ANSI standard, which can effectively reduce chlorine, taste and odor.

Material and Construction Tested & Certified NSF42 - The Materials and Construction Compliant with NSF42 standard. Our 4204490 Refrigerator Water Filter Selects BPA-free and Food-grade Materials, The Filter Housing has Passed Lead-Free Certification for lead-free Materials. For more details about NSF information, please enter certified model number "XLSUB490" on the NSF database.

4204490 Water Filter Replacement for Sub-Zero 4204490, 4290510, PRO 48, PRO 48 with glass door, BI-36F freezer, BI-36U up and down refrigerator/freezer, BI-48S side-by-side refrigerator/freezer, BI-48SD side-by-side Refrigerator/freezer, BI-36UG glass door refrigerator/freezer, BI-30U up and down refrigerator/freezer, BI-30UG glass door refrigerator/freezer, BI-42S side-by-side refrigerator/freezer, BI-42SD side-by-side refrigerator/freezer.

HIGH CAPACITY & KIND REMINDER - The 4204490 water filter cartridge Maximum Capacity is Up to 300 Gallons and Lifespan is about 6 Months. Filter is Advised to Replace every 3-6 Months, It just Depending On Your Usage and Possibly Your Local Water Quality.This Filter is shipped with complimentary Month Install Stickers that help Track the Service Life at all Times,You don't have to Spend Extra Effort to Monitor the Life of the Refrigerator Filter.

STRICT PERFECT-FIT DESIGN - Advanced Industrial Automation System and Precision Measurement Technology are used on The Refrigerator XLSUB490 Water Filter for Sub-Zero 4204490, 4290510 Refrigerator Water Filter, Each filter must be Subject to Strict Test of Leak-Free and Seal Performance to Ensure that You get the Same Perfect-Fit as the Original.

MULTI-FILTRATION TECHNOLOGY - The Material in the Refrigerator Water Filter for Sub-Zero 4204490, 4290510 is 100% Sri-Lankan Selected Coconut Shell Carbon Block with 2x Larger Surface Area and more Micropores, Which can Filter Particles with 0.5 micron small pore size, Reduce a wide range of harmful Substances in water including heavy Metals, chlorine, odor, Particles, and all other major impurities.

Cleaner water quality: The replaced filter element can effectively intercept impurities such as sediment and rust, ensure the safety and hygiene of drinking water and ice, and avoid impurities affecting the taste.

Prevent odor growth: Regular replacement can intercept contaminants and avoid contamination of the inside of the refrigerator to preserve the original taste of food.

Protect the Ice Maker: A clogged old filter can cause the Ice Maker to malfunction, and the water flow smoothly after replacing the refrigerator water filter reduces the risk of jamming or damage to the machine.

Optimize energy efficiency: Reduce refrigeration resistance due to clogged filters, reduce power consumption, and avoid "overloading" the refrigerator.

Authoritative Certifications: The filter has been certified by NSF against NSF/ANSI 42 and 372 standards, effectively reducing chlorine content. Activated carbon block and other advanced filter media ensure efficient and safe filtration.

Replacement for Sub-Zero 4204490,4290510, F-1000,F-2000, F-3000, WCF110-L, Compatible with F-1000S & F-2000S & F-3000S Filtration System, AquaPure AP Easy C-Complete

Water filter F-1000 is easy to install requiring no tools. For detailed instruction, please kindly refer to the Instruction Manual in the box.

To prolong the life of your appliance and achieve optimum performance, we recommend you to replace the F-1000 filter every 6 months or 500 gallons, whichever comes first and will vary based on water conditions.

Cost-effective choice helps you save money and enjoy fresh water.Connected with the cold water valve only! This filter does not reduce TDS！

After advanced upgrade, the model number is changed from AQU-F-1000 into AQU-WF03-F1. Our premium coconut carbon block filter is tested by independent laboratory against NSF/ANSI standard, which can effectively reduce chlorine, taste and odor.

Wide Compatibility – Sub-Zero 4204490, 4290510, F-1000, F-2000, F-3000, WCF110-L, and AquaPure AP Easy C-Complete. Fully compatible with F-1000S, F-2000S, and F-3000S filtration systems.

Superior Filtration Performance – Reduces chlorine, lead, and other harmful contaminants for cleaner, healthier water. Certified by NSF/ANSI 42 and 372 standards, the AQUWOW filter effectively reduces chlorine content, ensuring safer, cleaner water with improved taste and odor.

Advanced Carbon Block Technology - Featuring a premium coconut carbon block, independently tested against NSF/ANSI standards, providing superior chlorine reduction and enhanced water filtration efficiency.

Long-Lasting Use – To maintain the longevity of your appliances and ensure peak performance, ensure up to six months or 500 gallons of purified water, depending on usage and water conditions.

Easy Installation – Designed for a quick, precise fit without the need for tools. Tool-free installation process makes setup a breeze. Refer to the included Instruction Manual for step-by-step guidance.