Suggested Retail: $36.99. Renami Fluoride Filter Replacement for Berkey PF-2 Fluoride and Arsenic Reduction Elements Pack of 2 - Renami fluoride filters offer effective filtration and performance at an affordable price. They use a natural mineral synthetic material called carbonate apatite, with a content as high as 100%, which is safer than similar alumina-containing filters. For optimum performance, replace the fluoride filter every 1,000 gallons per pair, which may vary based on water conditions. Brand: Renami -- LOT STICKER: BB-BOX-BOXBB001450-ITEM-698b8385___LPNPMCQ4437694 Renami Fluoride Filter, Replacement for Berkey PF2 Fluoride and Arsenic Reduction Elements, Compatible with Berkey Gravity Filtration System, Natural Defluorination Filter Material, Pack of 2 -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.