Air-O-Swiss AOS 7533 Demineralization Granules for Humidifiers HUW1_A6WGG41

Air-O-Swiss 7533 Demineralization Cartridge Refill Granules, 1 Each AOS 7533 3-Pack Refill Granules for DMC 1 list-style-type: -disc 1 New and patented refill process. 2 When properly installed and maintained the granules effectively prevent the release of minerals in the air. 3 Granules should be replaced every 2-3 months; hard water usage may require more frequent replacement. 4 One box includes 3 single refill packets - use just one packet per refill. 5 For use with the AIR-O-SWISS demineralization cartridge AOS 7531. AIR-O-SWISS offers two options for replacing the demineralization cartridge: -Replace the whole cartridge with a new part (model AOS 7531) or use replacement granules (model AOS 7533 Refill Granules 3-Pack) to extend the life of the cartridge.