Features: Applicable models: Applicable to 150, 200S, 160, 300, LV600S, OasisMist 450S, OasisMist 1000S. It can strongly attch scale, rust, sulfides, suspended particles, and organic impurities in water, while effectively reducing odors to ensuring that the humidifier produces cleaner mists. Our Top Fill humidifier demineralization use ions exchange technology to effectively clean calcium and magnesium ions from water, reducing white scale dust and prevents scale buildup, thereby improving the safety of humidifiers and extending their service life. For the great filtration results, We recommend using 2 PACK Humidifier Demineralization Cartridge per tanks and replacing it every 30 days. These Humidifier Demineralization Cartridges ensuring safe water quality and effectively saving you time and money. Specifications: Component: Plastic Quantity: 6pcs/8pcs Size: about 3.56x7.11cm/1.4x2.8inch Applicable models: Suitable for 150, 200S, 160, 300, LV600S, OasisMist 450S, OasisMist 1000S. Package Includes: 6/8Pcs Humidifier Demineralization Cartridge note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.