Kohler Novita Bidet Ionic Water Filter - 3 Pack This authentic Kohler Novita filter softens water by adding negative ions, which makes water clean faster with less surface tension. This filter captures larger particulate matter and is the best choice for most installations. One filter can purify up to 410 gallons of water. The Novita bidet ionic water filter will reduce the hardness in your water and help prolong the life of the internal components of your bidet seat. It also acts as a screening filter, to help block impurities from your water lines before they even enter your seat! This is a universal filter, meaning it can be hooked to any seat with a 1/2 ? supply line. Impurities in incoming water lines are the number one cause of damage and leaking, resulting in repairs. These water filters are directly imported from Kohler Novita. The Kohler Novita bidet water filter meets rigid guidelines and is highly recommended by bidet seat manufacturers. Available in both ion and sediment models, filters have 1/2? fittings (one male, one female) on each end and will fit all bidets with 1/2? water supply lines. The Kohler Novita Bidet Ionic Water Filter softens the water so that it cleans faster and more effectively Each filter also contains a membrane which removes the particulate matter that is damaging to electric bidets. Comes in a pack of 3. This universal ion filter that can be used with any seat with a 1/2 ? water hose. Each filter typically lasts 4-6 months, depending on water quality.