About This MAXIMUM LEVEL FILTRATION - This filter cartridge reduces 99% lead, 99% microbial cysts, 97% chlorine taste and odor, plus 0.5 microns of sand, sediment, rust, and soil COMPACT DESIGN - This slim, compact cartridge takes up limited space under the sink USES EXISTING FAUCET - Filter water right at the sink without having to install an entirely separate faucet QUICK CHANGE - These filters are easy to install, requiring just a 1/4 turn for a quick change SIX MONTH FILTER LIFE - Use each filters for up to six months NSF STANDARD 42 CERTIFIED - Tested and certified by one of the world's most respected independent certification organizations that helps protect the world's food, water, consumer products, and environment Overview Material : Polypropylene (PP) Product Dimensions : 3.4"D x 3.4"W x 13.75"H Item Weight : 1.8 Pounds External Testing Certification : NSF, ANSI Product Benefits : Reduces Chlorine, Reduces Microbial Cysts, Reduces Sediment, Removes Lead