Active Aqua 20 Inch Carbon Block Filter

Even a small amount of chlorine can destroy your RO membrane. This carbon block filter removes chlorine before it can do any damage. Rated for approximately 3,750 gallons of water at 2 ppm chlorine. Great for removal of VOCs (volatile organic compounds), herbicides, pesticides, and other contaminants. Works with residential and commercial water purification systems, both for tanks and other applications.