The McNett Frontier Max Replacement In-Line Filter RED-IV-120 is designed for your Frontier Max In-Line Water Filtration System. This Red Line filter removes viruses as well as 99.9% of giardia, cryptosporidium, bacteria, chlorine, bad taste, chemicals and odors. The Miraguard antimicrobial technology prevents growth of fungus, mold, mildew or bacteria inside the filter. It features a high flow rate at 500ml per minute. The filter element will last for 120 gallons. Improved flow rate of 600ml per minute. Bring one with you on longer trips so you can keep using your Frontier Max filter system.