NEW IMPROVED FILTER - LockFit - Design for easier filter change - MAXION Filter Technology - Removes 99% Lead Certified to reduce 23 contaminants, 3x more than Brita Reduces Copper, Mercury, Industrial Pollutants, Chlorine (taste & odor), Microbial Cysts and more BPA free CleanSensor? Monitor filter change light - Slim design fits most refrigerator doors Easy-to-fill lid, covered pour-spout & comfort-grip handle 1 Filter provides up to 40 gallons (2 months) of clean water.