About This Quick & Easy Installation: Quick and easy installation into your undersink filtration system & no tools required. 6 Month/900 Gallon Filter Life: By replacing your water filter every 6 months or 900 gallons, which ever comes first, you keep your water tasting great. High Quality Filtration: This filter reduces Chlorine Taste & odor, Sediment, Sand, Silt, Rust and Corrosion, Turbity, and other particulates. Replacement Part For Many Part Numbers & Models: Comparable to 3US-AF01, 3US-PF01, 3US-AS01. Compatible Design: Great for home and kitchen use Overview Material : Activated Carbon Block Product Dimensions : 3.09"D x 3.09"W x 10.63"H Item Weight : 16 ounces External Testing Certification : NSF Product Benefits : Offers quick & easy installation, high quality filtration reducing various impurities, lasting 6 months or 900 gallons, replacement for various part numbers & models Offers quick & easy installation, high quality filtration reducing various impurities, lasting 6 months or 900 gallons, replacement for various part numbers & models