Make visibly cleaner better tasting water for the whole home a reality with the Culligan S-1A Whole Home Standard 3/4 Water Filter Replacement. Available in a 2-pack for a convenient well-rounded approach to medium-level water filtration this standard duty water filter replacement protects your plumbing and home appliances from sediment and contaminant buildup (think: rust scale and sand) thanks to its pleated cellulose filter material which shows its true strength when wet. With a flow rate of 4 gallons per minute this pair of Culligan whole home water filters lasts 6 months or 16 000 gallons for durable water filtration so you can feel more at ease when hydrating or cooking your favorite recipes. These standard duty replacement filters with a 20 micron rating are compatible with most standard whole house water filtration systems including the Culligan Filtration Systems HF-150A HF-360A HF-360B and WH-S200-C. It is not recommended for use with non-treated well water supplies. In need of more water filters? Culligan offers a full line of water filtration solutions from under sink filtration to whole home water filter systems to make your water the best it can be—and even better: You can easily install it all on your own.