Filter Compatibility and Instructions Dupont Compatible Models: WFQTC70001 Brita Redi-Twist Compatible Models: USF-203 Culligan Compatible Models: RC-EZ-3 AquaCrest Compatible Models: AQU-RC-EZ-3 Use with the following Culligan System: US-EZ-1 US-EZ-3 US-EZ-4 IC-EZ-1 IC-EZ-3 IC-EZ-4 RV-EZ-3 Use with the following Dupont System: WFQT27000 WFQT39000 Use with the following Brita Redi-Twist System: USS-323 USS-334 Disclaimer: Do not use this filter with water that is Hot. Do not use the filter with water that is microbiologically unsafe or of unknown quantity. DO NOT use this filter longer than its intended 12 Month use. Doing so may result in leaks and water damage. Culligan is registered trademarks of Culligan international company. AquaCrest is registered trademarks of Ecolife Technologies LLC. Culligan and AquaCrest are registered trademarks of their respective holder(s). American Filter Company and AmericanFilterCompany.com are not affiliated with Culligan and AquaCrest. This product is not affiliated with or authorized by Culligan and AquaCrest. Install Instructions: Turn off Water Supply. Remove existing filter. Install new filter in head and turn till locked. Turn on Water Supply. Check for leaks. Flush system for 3-5 Minutes.

Shop iSpring F3DS 6-Month Filter Replacement for DS4B & DS4S

iSpring CU-A3 Ultra Filtration 5-Filter Annual Replacement Pack

iSpring CU-A4 Ultra Filtration 4-piece Filter Pack, 4 stages help you experience clean and healthy water

This is a great filter system. My wife has multiple chemical sensitivities and this filter works very well for her. It is also very easy to replace. I usually have a set in storage and when I change them out, I buy a new set, ready to go.. Orlan. Sun, 03 Dec 2023

iSpring CU-A4 Ultra Filtration 7-piece Filter Pack

Great filters and great support, thanks Nick. Anonymous. Wed, 24 Jun 2026

CalciumClear water conditioners offer an eco-friendly solution, crafted in England. This electrostatic device, utilizing galvanic action, effectively dissolves and prevents scale buildup. It keeps scale particles in the water flow, while the Dry Contact Anode’s galvanic effect eliminates existing scale and corrosion. Designed with durable, high-quality materials, it ensures long-lasting performance. By extending the lifespan of equipment and reducing energy consumption, it operates with zero ongoing costs. The precipitation process also helps remove unwanted nutrients with no chemicals, magnets, or moving parts needed. The result is cleaner water and longer-lasting systems.