General description The 2pcs BB9-2 Filter Element is designed for gravity filtration, effectively removing residual chlorine and heavy metals from water. This filter element combines a black purification filter and a PF-2 fluoride replacement filter, ensuring a significant reduction of harmful substances in outdoor water sources. Technical specifications Material: Natural coconut shell activated carbon Shell: BPA-free Filter lifespan: Up to 6,000 gallons Usage Recommended to change the filter every 6,000 gallons for optimal performance Performance may vary based on water quality conditions