I believe there are four items in total, as there are two boxes with two items each. Since these are unopened, they are being sold as junk items. Sharp Humidifier Compatible Ion Cartridge FZ-AG01K2 (Silver Ion 3x Increase/Set of 2/Up to 24 Months Replacement) [Product Name] FZ-AG01K1 Ion Cartridge Compatible Silver Ion Antibacterial Far Infrared Water Purification Reduction Scale Inhibition Set of 2 FZ-AG01K2 Silver Ion KC-L50 KC-N50 KC-J500Y Humidifying Air Purifier AG01K2 Compatible KC-H500Y KC-H50 Ion Exchange Resin Ag+ Humidifier Replacement [Product Features/Functions] 《Set Contents/Increased Silver Ion》 Compatible ion cartridge set of 2. Silver ion antibacterial balls are used, and the amount of ions has been increased to **3 times the original amount (200% increase)**. 《Antibacterial/Sterilizing Effect》 Removes and suppresses over 99% of bacteria that cause slime and musty odors, reducing bacteria in the tank and tray. Provides long-lasting antibacterial and sterilizing action, allowing for humidification with clean water. 《High-Function 3-in-1 Filter Material (From High-Function Type Information)》 Equipped with three types of filter materials: silver ion antibacterial balls, scale inhibitor, and far-infrared ceramic balls. The scale inhibitor prevents the formation of scale. Far-infrared ceramic balls emit far-infrared rays, activating water molecules and significantly increasing humidification efficiency. 《Durability/Replacement Guide》 The antibacterial effect per piece lasts for a long period, **up to approximately 2 years (24 months)**. (Approximately twice that of the conventional product) The water in the tank needs to be replaced daily, regardless of the frequency of use. 《Main Compatible Models》 Humidifying Air Purifier: KC-L50, KC-N50, KC-J500Y, KC-H500Y, KC-H50, KC-500Y series, KC-700Y series, etc. **Humidifier: HV-** series various (HV-C30/C50/D30/D50/E30/F30/G30/H30/J30/L30/P30/R30/S55/T55, etc.) **Humidifying Ceramic Fan Heater: HX-** series various (HX-C120/D12/E120/F120/G120/H120/J120/L120/PK12, etc.) Also widely compatible with KC-A/B/D/E/F series. This text has been summarized by AI. Please be sure to check the product information before purchasing.