Brondell  SWF44 Swash Bidet Filter - Premium Bidet Filter for Electronic Bidet Toilet Seats PREMIUM FILTRATION: granular carbon removes chlorine, heavy sediment, and particulates with an Ion Exchange to prevent calcification build-up MORE FILTRATION: more filter material than the competition, weighs 60 percent more and does more than just filter sediment - filters chlorine too BIDET SEAT FILTER: ideal for your Brondell Swash bidet toilet seat but compatible with most brands and models EFFECTIVE UP TO 6 MONTHS: keeps your bidet seat working trouble-free by preventing sediment and calcification build-up inside your electronic bidet toilet seat QUALITY YOU CAN TRUST: beware of cheap filters that won't get the job done, trust Brondell - the leader in bidet products