Part Number: PDC51V1 KAZDC-51. Applicable models: Suitable for V4600 V5100 VUL575 696. Enhances your humidifier's with our demineralization cartridges, specifically designed to efficiently remove minerals and impurities, white and extending the life of your humidifiers. Not suitable for VUL525, VUL545, VUL530, VUL565, V5200 series! Perfect for use in bedrooms to maintain humidity, in offices to combat dry air from air conditioning, in s rooms for a moist sleeping , and during winter heating to alleviate dryness. These cartridges feature advanced filtration technology for easy installation, ensuring optimal water and improved humidification without the need for tool.