Feature●ION Exchange Replacement Filter for SU-4010/SU-4010G●We recommend changing the ION Exchange Filter once every 6 months. Compatible models: SU-4010 and SU-4010G●SPT F-4010A ION Exchange Replacement Filter for SU-4010/SU-4010G, White●Item Package Weight: 1.0 poundsDescription We recommend changing the ION Exchange Filter once every 6 months. Compatible models: SU-4010 and SU-4010G