Humidifier Filter, Replacement, 6 pieces, 0.3 x 5.9 inches (8 x 150 mm), Water Wick, Water Supply Core, Replacement Ultrasonic Cotton Filter, Office Scissors, Can be cut freely to size. When using for the first time, soak the cotton swab in water for about 3 minutes, and it will become familiar with the water before use. The filter is recommended to be replaced in about 3 months, but depending on the usage and usage environment, it may be faster to replace the filter Sold as a set of 6. 8mm x 150mm