Aquaboon 5 Micron Replacement Carbon Block Water Filter Cartridge Features COCONUT SHELL CARBON LONG FILTER LIFE BPA FREE MATERIALS ONLY AQUABOON MISSION Enjoy long-lasting coconut shell activated carbon water filters. It removes chlorine, taste and odor, other harmful industrial chemicals. 4 – 6 months / 20000 – 30000 gallons filter life (depending on the water quality). Replace to keep pleasant taste of your water. BPA is the toxic chemical has been linked to causing reproductive, immunity, and neurological problems. Our filters are BPA FREE! Aquaboon mission is to provide the highest quality of service and products in the water treatment industry.