- This filter set combines BB9-2 black purification elements and PF-2 fluoride replacement filter.
- The premium carbon block can absorb many impurities like chlorine, rust, sediment, taste, and odor.
- Replace the BB9-2 filter every 6,000 gallons per pair and replace PF-2 every 1,000 gallons per pair.
- Replacement for: Black Replacement Filters (BB9-2) & Fluoride Filter Combo Pack (PF-2). Interchangeable with Travel, Big, Royal, Imperial and Crown Series and Gravity filter system. Waterdrop is an independent brand.